Relevant bibliographies by topics / Zero mode Laser

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Zero mode Laser'

Author: Grafiati
Published: 1 February 2025

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Journal articles on the topic "Zero mode Laser"

1

Yan, Qin, Jian Lu, and Xiao Wu Ni. "Measurement of the Transient Velocity of Nanoparticles in Flowing Nanofluids by Using the Method of Dynamic Laser Speckles." Applied Mechanics and Materials 226-228 (November 2012): 1852–57. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1852.

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Experimental equipments are designed for the zero-crossing method of dynamic laser speckles to investigate the moving nature of nanoparticles in flowing nanofluids. After the experiments the velocity of nanoparticles in flowing nanofluids is determined according to its relationship with the zero-crossing rate of speckle intensity fluctuation. The results show that the zero-crossing rate is very sensitive to the velocity of nanoparticles when the velocity of nanofluids ranges from 17.6 mm/s to 60.2 mm/s. A TEM10 mode–like laser beam is designed and taken as an incident light to detect the movin
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Kolbas, Yu Yu, and M. A. Ivanov. "Improved Algorithm for Mathematical Correction of the Zero Drift of the Zeeman Laser Gyro with Switching Longitudinal Mode of Generation." Herald of the Bauman Moscow State Technical University. Series Instrument Engineering, no. 2 (125) (April 2019): 91–103. http://dx.doi.org/10.18698/0236-3933-2019-2-91-103.

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The paper addresses time and temperature zero drifts in Zeeman laser gyroscope (RLG) operating in the mode of periodic adjustment of RLG to the longitudinal mode of generation with the opposite circular polarization of the light wave. In such a gyroscope, the zero drift can be divided into magnetic and non-magnetic components having different nature and making a significantly different contribution to the final error. Algorithmic methods are proposed for mathematical compensation of RLG zero drift, both with and without using initial calibration. It is shown that the simultaneous use of reprod
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Zakharyash, V. F., V. M. Klement’ev, and E. A. Titov. "Forced mode locking in a semiconductor laser." Journal of Physics: Conference Series 2067, no. 1 (2021): 012005. http://dx.doi.org/10.1088/1742-6596/2067/1/012005.

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Abstract A brief description of the theory of mode locking of a semiconductor laser when the modulating generator frequency is close to the intermode frequency is given. It is shown that during mode locking there is phase locking, due to which the dispersion of summed intensity in the interpulse interval tends to zero.
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Bourcier, Roy J. "Near-Zero Shift Attachment for Optoelectronic Components." International Symposium on Microelectronics 2011, no. 1 (2011): 001058–66. http://dx.doi.org/10.4071/isom-2011-tha5-paper3.

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High performance laser-based optoelectronic devices commonly feature the use of free-space optical coupling between the laser diode and optical elements such as filters, secondary harmonic generators and optical fibers. A critical challenge in the assembly of such components is maintaining the required optical alignment precision during attachment of the optical subcomponents to a common platform. In the case of devices based on single mode waveguides, the post-attach shift must often be held to less than a few hundred nanometers to achieve the desired optical coupling efficiency. Historically
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Clorennec, Dominique, Claire Prada, Daniel Royer, and Todd W. Murray. "Laser impulse generation and interferometer detection of zero group velocity Lamb mode resonance." Applied Physics Letters 89, no. 2 (2006): 024101. http://dx.doi.org/10.1063/1.2220010.

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Lee, Seung Seok, and Sang Whoe Dho. "Suppressing Technique of the Antisymmetric Mode by the Superposition of Lamb Waves Generated by Two Laser Beams in a Thin Plate." Key Engineering Materials 321-323 (October 2006): 103–7. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.103.

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We present a suppressing technique of the antisymmetric mode by superposition of Lamb waves generated by two laser beams in a thin plate. Two Lamb waves of the same frequency propagating from the opposite direction simultaneously arrive at the point of measurement and are superposed to compose one Lamb wave. The amplitude of the superposed Lamb wave depends on the distance between two laser beams. The suppressing of antisymmetric Lamb wave mode is accomplished by selecting the distance between two beams which simultaneously satisfies the condition of the anti-node(maximum) for the symmetric mo
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Cattarusa, Douglas Alan, Xiao Min Jin, Xing Xing Fu, Xiang Ning Kang, Bei Zhang, and Guo Yi Zhang. "Optical-Mode Study of Galium Nitrate Based Laser Diodes." Advanced Materials Research 571 (September 2012): 476–81. http://dx.doi.org/10.4028/www.scientific.net/amr.571.476.

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This paper focuses on the optical mode analysis of laser diodes to improve light emission. Under the mode analysis, we compare the optical confinement factor (OCF) percentage of the emitting light from the LDs. There are two structures which we analyze: a basic GaN waveguide structure and an InGaN waveguide structure. The second structure has additional InGaN waveguides and is analyzed under two additional design variations: the concentration of Indium and the thickness of the top waveguide layer. The results of this study indicate introducing InGaN waveguide layers correlates with lower order
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Hoare, R., R. Mardling, and GJ Troup. "Intensity Correlation Functions for 'Thermalised' TEMn0 Laser Beams." Australian Journal of Physics 39, no. 4 (1986): 505. http://dx.doi.org/10.1071/ph860505.

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A well-stabilised, single mode laser beam will give zero intensity correlation. However, a laser beam may be 'thermalised' by shining it on a rotating ground glass disc, and then intensity correlation experiments will give nonzero results. We present here calculations of the intensity correlation functions of the TEMlO, TEM20, TEM30 and TEM40 Gaussian-Hermite beams. We were led to perform these calculations by the results of intensity correlation measurements on a laser with 'butted-on' mirrors nearing the end of its useful life.
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Debnath, Pulak Chandra, and Dong-Il Yeom. "Ultrafast Fiber Lasers with Low-Dimensional Saturable Absorbers: Status and Prospects." Sensors 21, no. 11 (2021): 3676. http://dx.doi.org/10.3390/s21113676.

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Wide-spectral saturable absorption (SA) in low-dimensional (LD) nanomaterials such as zero-, one-, and two-dimensional materials has been proven experimentally with outstanding results, including low saturation intensity, deep modulation depth, and fast carrier recovery time. LD nanomaterials can therefore be used as SAs for mode-locking or Q-switching to generate ultrafast fiber laser pulses with a high repetition rate and short duration in the visible, near-infrared, and mid-infrared wavelength regions. Here, we review the recent development of emerging LD nanomaterials as SAs for ultrafast
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Harb, MS, and FG Yuan. "Barely visible impact damage imaging using non-contact air-coupled transducer/laser Doppler vibrometer system." Structural Health Monitoring 16, no. 6 (2016): 663–73. http://dx.doi.org/10.1177/1475921716678921.

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The aim of this study is to investigate the capability of the zero-lag cross-correlation imaging condition of an A0 Lamb wave mode in imaging a barely visible impact damage in a carbon fiber–reinforced polymer composite using a fully non-contact-guided wave-based non-destructive inspection system. A 16-ply (45/0/-45/90)2s carbon fiber–reinforced polymer laminate was impacted at three different locations with different impact energies using a drop ball at three drop heights causing three barely visible impact damages with different sizes. The A0 Lamb wave mode is generated inside the laminate u
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Dissertations / Theses on the topic "Zero mode Laser"

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Ji, Kaiwen. "Exceptional Points Bifurcations and Zero Mode Lasing in Coupled Nanolaser Arrays." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP167.

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La conservation de l'énergie façonne notre compréhension de la réalité. Néanmoins, ce principe peut être violé lorsqu’on considère un sous-système où l'énergie peut être échangée avec l'environnement externe. Un tel scénario physique peut être décrit par un Hamiltonien non-Hermitien présentant un spectre d'énergies complexes. L'étude des systèmes non-Hermitiens a connu des avancées remarquables depuis la découverte de la symétrie Parité-Temps (PT). Dans un tel système PT-symétrique, une singularité, appelée point exceptionnel (EP), a récemment suscité une attention considérable. Dans les systè
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Yan, Guqi. "Zero-group-velocity Lamb modes in laser ultrasonics : fatigue monitoring and material characterization." Thesis, Le Mans, 2018. http://www.theses.fr/2018LEMA1026/document.

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Ces dernières années, les modes de Lamb à vitesse de groupe nulle (ZGV) se sont révélés être un outil efficace pour sonder localement et précisément l'épaisseur d'un échantillon ou les propriétés mécaniques de matériaux isotropes ou anisotropes. Ce type particulier d'ondes guidées, telles de fortes résonances locales de la structure, résulte de l'interférence de deux ondes de Lamb ayant une vitesse de phase opposée et coexistant pour un couple fréquence-nombre d'ondes particulier. Les ultrasons laser ont démontré leur capacité à générer et détecter efficacement de t
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Matthews, Desjanelle. "Dimethyl sulfide oxidation in the polluted marine boundary layer : a zero dimensional model study." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29455.

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A comprehensive DMS oxidation reaction mechanism was added to a chemical box model (Model of Chemistry Considering Aerosols - MOCCA) to investigate how atmospheric sulfate levels are affected by pollution in the marine boundary layer. The interaction of a remote air mass with a polluted coastal air mass containing elevated NOx, alkane, and alkene levels was simulated for a mid-latitude region of the Northern Hemisphere. Model runs from different settings were compared with respect to species concentrations, branching ratios, and product yields. Results showed moderate decreases in gas phase DM
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Meziane, Bilel. "Film thickness build-up in highly loaded lubricated contacts under Zero Entrainment Velocity condition." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI005.

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Les contacts lubrifiés sous forte charge sont souvent étudiés dans des conditions de roulement/glissement. Dans ces cas, l’entrainement du lubrifiant dans un coin d’huile explique la présence d’un film séparateur. Cependant, il existe un certain nombre d’applications dans lesquelles les surfaces en contact ont des vitesses égales et opposées. Cela correspond à une vitesse d’entrainement (définie comme la moyenne des vitesses des deux surfaces) nulle. Dans ce cas, les modèles prédictifs de la littérature ne peuvent plus s’appliquer. Dans ce mémoire de thèse, les phénomènes physiques conduisant
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von, Stillfried Florian. "Computational fluid-dynamics investigations of vortex generators for flow-separation control." Doctoral thesis, KTH, Turbulens, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94879.

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Many flow cases in fluid dynamics face undesirable flow separation due to ad-verse pressure gradients on wall boundaries. This occurs, for example, due togeometrical reasons as in a highly curved turbine-inlet duct or on flow-controlsurfaces such as wing trailing-edge flaps within a certain angle-of-attack range.Here, flow-control devices are often used in order to enhance the flow and delayor even totally eliminate flow separation. Flow control can e.g. be achieved byusing passive or active vortex generators (VGs) for momentum mixing in theboundary layer of such flows. This thesis focusses on
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Kaprielian, Leslie. "Modélisation 0D pour la combustion dans les moteurs à allumage commandé : développements en proche paroi et dans le front de flamme." Thesis, Paris, ENSAM, 2015. http://www.theses.fr/2015ENAM0012/document.

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Depuis quelques années, les modèles 0D trouvent un regain d'intérêt auprès des motoristes. En effet, ces modèles, fournissant aisément un comportement thermodynamique du moteur, peuvent être couplés avec des outils de contrôle moteur. Néanmoins, leur précision doit être augmentée, pour répondre aux enjeux technologiques actuels. Dans les moteurs à allumage commandé, la flamme turbulente prémélangée est modélisée comme un ensemble de flammelettes cohérentes entre elles. Cette approche généraliste nécessite un traitement particulier en proche paroi, motivé par une modification de la structure de
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Prudík, Jiří. "Model metropolitní optické sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217666.

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The purpose of this master’s thesis is foremost to provide a simple guide how to build elements of optical metropolitan area network. The basic model consists to sequence of construction, network topology, passive and active parts. The collection contains examples of alternative technology such as Wireless LAN with different frequency. The optical network construction based on optical cable, fibres, splices, trays, adapters, connectors and active parts for example a lot of media convertor models. After that there are demonstrating type of wavelength division multiplexer used in metropolitan ar
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Pešl, Jiří. "Spínaný zdroj se spínáním při nulovém napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242009.

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Diploma thesis describes the design of an switched mode power supply with switching at zero voltage for driving the anode of Anode-layer type ion source. First aim of thesis is ion sources and specialy Anode-layer type of ion source in detail. Main aim of thesis are important aspects of the design of switching mode power supply, which comes later the detailed construction of an switched mode power supply with output voltage 2800 V at output power 2800 W.
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Che, Choi-hong, and 謝彩虹. "Preparation of Nanoscale Zero-Valent Iron Suspension and Its Transport Model in Saturated Soil Layer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/52570937793649047962.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>96<br>Direct injection zero valent iron method has been widely used for treating chlorinated hydrocarbon contaminated groundwater aquifers. However, the efficiency decreases and the cost rises due to the poor spreading ability of iron particles in the subsurface environment. Therefore, if we can enhance the spreading ability of iron in porous media by adding surface modifier we may increase the applicability of iron particles. We used different stabilizing to produce nanoscale iron suspension by means of batch experiments. Also we evaluated the performance of the st
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Books on the topic "Zero mode Laser"

1

P, Leonard B., and United States. National Aeronautics and Space Administration., eds. A modified mixing length turbulence model for zero and adverse pressure gradients. National Aeronautics and Space Administration, 1994.

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Conley, J. M. A modified mixing length turbulence model for zero and adverse pressure gradients. National Aeronautics and Space Administration, 1994.

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3

Ndaona, Chokani, and Langley Research Center, eds. Hypersonic boundary-layer stability experiments on a flared-cone model at angle of attack in a quiet wind tunnel. National Aeronautics and Space Administration, Langley Research Center, 1996.

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Ndaona, Chokani, and Langley Research Center, eds. Hypersonic boundary-layer stability experiments on a flared-cone model at angle of attack in a quiet wind tunnel. National Aeronautics and Space Administration, Langley Research Center, 1996.

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Ndaona, Chokani, and Langley Research Center, eds. Hypersonic boundary-layer stability experiments on a flared-cone model at angle of attack in a quiet wind tunnel. National Aeronautics and Space Administration, Langley Research Center, 1996.

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Ndaona, Chokani, and Langley Research Center, eds. Hypersonic boundary-layer stability experiments on a flared-cone model at angle of attack in a quiet wind tunnel. National Aeronautics and Space Administration, Langley Research Center, 1996.

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7

Horneff, Vanya, Raimond Maurer, and Olivia S. Mitchell. How Persistent Low Expected Returns Alter Optimal Life Cycle Saving, Investment, and Retirement Behavior. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198827443.003.0008.

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This chapter explores how an environment of persistent low returns influences saving, investing, and retirement behaviors, compared to what in the past had been conceived of as ‘normal’ financial conditions. Using a calibrated life cycle dynamic model with realistic tax, minimum distribution, and social security benefit rules, we can mimic the large peak at the earliest claiming age at 62 that is seen in the data. Also in line with the evidence, our baseline results show a smaller second peak at the (system-defined) Full Retirement Age of 66. In the context of a zero-return environment, we sho
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Kolluri, Surya, and Cynthia Hutchins. Seven Life Priorities in Retirement. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198808039.003.0007.

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Using a theoretical life cycle model, this chapter evaluates how much workers benefit from having the option to hire a financial advisor when it is costly for employees to rebalance their own financial portfolios. Results indicate that having access to a financial advisor at the start of one’s career can be quite beneficial. If delegation to an advisor is available only a decade after entering the labor market, the benefit of delegation is cut by half, and it falls further if delegation is available only later in life (at age 60). The chapter also examines whether simpler target date funds (TD
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Bunik, Maya. Breastfeeding Telephone Triage and Advice. 2nd ed. American Academy of Pediatrics, 2015. http://dx.doi.org/10.1542/9781581109528.

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Created by a leading breastfeeding and phone care practitioner, this newly revised problem-solver helps nurses, lactation professionals, and other medical staff confidently advise breastfeeding mothers. It is ideal for use with the acclaimed AAP Pediatric Telephone Protocols. For quick and convenient access, 65 practice-tested protocols are grouped by topic area including: Mother Milk Expression Baby--Early and Later Special Circumstances. More than 50 illuminating photos help triagers zero-in on caller problems. NEW in the 2nd Edition! New protocols -- breast pain chronic &amp;gt;1 week... lo
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Milonni, Peter W. An Introduction to Quantum Optics and Quantum Fluctuations. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199215614.001.0001.

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This book is an introduction to quantum optics for students who have studied electromagnetism and quantum mechanics at an advanced undergraduate or graduate level. It provides detailed expositions of theory with emphasis on general physical principles. Foundational topics in classical and quantum electrodynamics, including the semiclassical theory of atom-field interactions, the quantization of the electromagnetic field in dispersive and dissipative media, uncertainty relations, and spontaneous emission, are addressed in the first half of the book. The second half begins with a chapter on the
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Book chapters on the topic "Zero mode Laser"

1

Wu, Tong, Yiqiang Chen, Yang Gu, Jiwei Wang, Siyu Zhang, and Zhanghu Zhechen. "Multi-Layer Cross Loss Model for Zero-Shot Human Activity Recognition." In Advances in Knowledge Discovery and Data Mining. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47426-3_17.

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Rosenberg, Mark, Emaline Laney, and Claes Tingvall. "Vision Zero in Disease Eradication." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76505-7_45.

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AbstractThe eradication of smallpox – the first and so far only human disease to be eradicated – generated a tremendous amount of excitement and attention to the idea of disease eradication and elimination. In the twentieth century alone, smallpox had claimed the lives of more than 300,000,000 people (Sneed A, Scientific American, https://www.scientificamerican.com/article/who-remember-smallpox/, 2014). The last natural case occurred in 1977, almost 200 years after the smallpox vaccine was discovered, and in 1979 the World Health Organization declared that the disease had been eradicated (WHO, Smallpox, World Health Organization. World Health Organization. https://www.who.int/csr/disease/smallpox/en/, 2019c). Most importantly, it demonstrated that eradication was possible; that through the use of science, we could change our future for the better in ways that we had not even dared to think about previously. This achievement also helped to focus attention on clear definitions of disease eradication and elimination. Since then, these definitions have been continuously evolving. In 1993, the International Task Force for Disease Eradication (ITFDE I) defined disease control, elimination, and eradication. With that, they evaluated over 90 potential infectious disease candidates and concluded that six were eradicable. Subsequently in 1997, the Dahlem Workshop focused on the science of eradication and defined a range of public health approaches to infectious diseases from control, to elimination of disease, elimination of infections, eradication, and extinction. Three years later, the second International Task Force for Disease Eradication (ITFDE II) convened in 2000 to review the progress over the past decade.Inspired by these efforts, we reviewed our own experience and interviewed leaders of several disease eradication and elimination campaigns to identify lessons learned from a variety of disease elimination campaigns including smallpox, polio, Guinea worm, and onchocerciasis. Our aim was to identify lessons that might be applied to road traffic injuries. We identified 12 lessons from these infectious disease campaigns: (1) this is a cause and effect world; (2) know the truth; (3) coalitions are absolutely essential and absolutely hard; (4) avoid certainty (the Achilles heel of science); (5) measure frequently and build in continuous improvement; (6) respect the culture and work with the people you are trying to help; (7) the best decisions are based on the best science, but the best results, on the best management; (8) the best solutions move us closer to global health equity; (9) do not underestimate the time, resources, or tenacity it will take succeed; (10) eradication does not always require a vaccine or a cure; (11) start in the most difficult places first; and (12) you don’t begin at the end. These concepts from infectious disease campaigns have broader public health applications, and we discuss some of the implications for reducing road traffic injuries.
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Rosenberg, Mark, Emaline Laney, and Claes Tingvall. "Vision Zero in Disease Eradication." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-23176-7_45-1.

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AbstractThe eradication of smallpox – the first and so far only human disease to be eradicated – generated a tremendous amount of excitement and attention to the idea of disease eradication and elimination. In the twentieth century alone, smallpox had claimed the lives of more than 300,000,000 people (Sneed A, Scientific American, https://www.scientificamerican.com/article/who-remember-smallpox/, 2014). The last natural case occurred in 1977, almost 200 years after the smallpox vaccine was discovered, and in 1979 the World Health Organization declared that the disease had been eradicated (WHO, Smallpox, World Health Organization. World Health Organization. https://www.who.int/csr/disease/smallpox/en/, 2019c). Most importantly, it demonstrated that eradication was possible; that through the use of science, we could change our future for the better in ways that we had not even dared to think about previously. This achievement also helped to focus attention on clear definitions of disease eradication and elimination. Since then, these definitions have been continuously evolving. In 1993, the International Task Force for Disease Eradication (ITFDE I) defined disease control, elimination, and eradication. With that, they evaluated over 90 potential infectious disease candidates and concluded that six were eradicable. Subsequently in 1997, the Dahlem Workshop focused on the science of eradication and defined a range of public health approaches to infectious diseases from control, to elimination of disease, elimination of infections, eradication, and extinction. Three years later, the second International Task Force for Disease Eradication (ITFDE II) convened in 2000 to review the progress over the past decade.Inspired by these efforts, we reviewed our own experience and interviewed leaders of several disease eradication and elimination campaigns to identify lessons learned from a variety of disease elimination campaigns including smallpox, polio, Guinea worm, and onchocerciasis. Our aim was to identify lessons that might be applied to road traffic injuries. We identified 12 lessons from these infectious disease campaigns: (1) this is a cause and effect world; (2) know the truth; (3) coalitions are absolutely essential and absolutely hard; (4) avoid certainty (the Achilles heel of science); (5) measure frequently and build in continuous improvement; (6) respect the culture and work with the people you are trying to help; (7) the best decisions are based on the best science, but the best results, on the best management; (8) the best solutions move us closer to global health equity; (9) do not underestimate the time, resources, or tenacity it will take succeed; (10) eradication does not always require a vaccine or a cure; (11) start in the most difficult places first; and (12) you don’t begin at the end. These concepts from infectious disease campaigns have broader public health applications, and we discuss some of the implications for reducing road traffic injuries.
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4

Andersson, Ragnar, and Thomas Gell. "Vision Zero on Fire Safety." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76505-7_44.

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AbstractSince 2010, Sweden has a Vision Zero policy on fire safety: no one should die or be seriously injured as a result of fire. Compared to the traffic safety model, however, the preconditions for successful implementation appear more immature and less convincing in the fire area. The purpose of this chapter is to illustrate, using the Vision Zero policy on fire safety as an example, how a Vision Zero initiative in a new area, where the conditions for governance may differ significantly from the area of inspiration, can be dealt with as a dynamic process to gradually establish credibility and effectiveness.Globally, fire is a significant cause of death and injury. The general trend is toward a slow decline, especially among middle-income and high-income countries. The decline may be due to successful fire safety efforts, but also to other conditions affecting it indirectly. Both risk-increasing and risk-reducing factors determine fire safety. Risk increasing factors include an ageing population, an increasing diversity of possible ignition sources, and a change in the composition and amount of combustible materials present in our homes. The risk-reducing factors include generally favorable socioeconomic and technological developments, including concrete societal actions directed against fire risks such as the promotion of smoke detectors and sprinkler systems.Fire safety is one of the oldest documented examples of societal risk management. City planning and construction were early influenced by fire safety considerations, while in contrast, the legal responsibility for residential fire safety has largely remained a private and individual matter. The situation is similar to the one that for long prevailed in the traffic sector, that is, the primary responsibility rests with the system’s users, not with its designers.The launch of the Vision Zero on fire safety in 2010 represented a clear boost in ambition. Along with the vision, a strategy intended to guide the work toward the visionary goal was also presented. The strategy included four items: information, technical solutions, local collaboration, and evaluation/research. Several actions were taken in line with the strategy, including a significant research effort and the development of a set of indicators to monitor progress.Ten years later, the research effort has brought new knowledge that puts previous perceptions into partly new light. The notion that survival depends on the individual’s personal capacities is strengthened. Adverse outcomes such as death and serious injury appear mainly linked to specific vulnerabilities of certain groups for medical and social reasons. Most fires are handled by the residents themselves without injuries and without assistance from Rescue Services; on the other hand, even minor fires can be fatal for vulnerable residents. This turns the problem framing toward social aspects rather than technical, since broad groups of residents lack the capacities needed, conflicting with the prevailing view that the individual should bear the primary responsibility.Other findings relate to the proven inefficiency of certain measures for groups at elevated risk and the need for re-thinking and innovations to meet the challenges ahead. This includes extended inter-sectoral collaboration on a broader spectrum of residential risks besides fire, threatening the same groups for similar social and medical reasons.This updated state of knowledge is now being used as a basis for renewing current national fire safety strategies. With reference to general principles of systems control, this chapter will discuss obstacles and challenges to establish a more robust and systematic national control of the fire problem in line with the Vision Zero policy. The appropriateness of launching Vision Zero policies in fields that are not yet ripe for systematic governance is also discussed. It is concluded that a Vision Zero initiative can still be meaningful and successfully pursued, provided that limitations in the ability to influence crucial elements in the system are openly identified and systematically addressed in a process in which strategical and policy developments interact with research and innovation.
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Andersson, Ragnar, and Thomas Gell. "Vision Zero on Fire Safety." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-23176-7_44-1.

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AbstractSince 2010, Sweden has a Vision Zero policy on fire safety: no one should die or be seriously injured as a result of fire. Compared to the traffic safety model, however, the preconditions for successful implementation appear more immature and less convincing in the fire area. The purpose of this chapter is to illustrate, using the Vision Zero policy on fire safety as an example, how a Vision Zero initiative in a new area, where the conditions for governance may differ significantly from the area of inspiration, can be dealt with as a dynamic process to gradually establish credibility and effectiveness.Globally, fire is a significant cause of death and injury. The general trend is toward a slow decline, especially among middle-income and high-income countries. The decline may be due to successful fire safety efforts, but also to other conditions affecting it indirectly. Both risk-increasing and risk-reducing factors determine fire safety. Risk increasing factors include an ageing population, an increasing diversity of possible ignition sources, and a change in the composition and amount of combustible materials present in our homes. The risk-reducing factors include generally favorable socioeconomic and technological developments, including concrete societal actions directed against fire risks such as the promotion of smoke detectors and sprinkler systems.Fire safety is one of the oldest documented examples of societal risk management. City planning and construction were early influenced by fire safety considerations, while in contrast, the legal responsibility for residential fire safety has largely remained a private and individual matter. The situation is similar to the one that for long prevailed in the traffic sector, that is, the primary responsibility rests with the system’s users, not with its designers.The launch of the Vision Zero on fire safety in 2010 represented a clear boost in ambition. Along with the vision, a strategy intended to guide the work toward the visionary goal was also presented. The strategy included four items: information, technical solutions, local collaboration, and evaluation/research. Several actions were taken in line with the strategy, including a significant research effort and the development of a set of indicators to monitor progress.Ten years later, the research effort has brought new knowledge that puts previous perceptions into partly new light. The notion that survival depends on the individual’s personal capacities is strengthened. Adverse outcomes such as death and serious injury appear mainly linked to specific vulnerabilities of certain groups for medical and social reasons. Most fires are handled by the residents themselves without injuries and without assistance from Rescue Services; on the other hand, even minor fires can be fatal for vulnerable residents. This turns the problem framing toward social aspects rather than technical, since broad groups of residents lack the capacities needed, conflicting with the prevailing view that the individual should bear the primary responsibility.Other findings relate to the proven inefficiency of certain measures for groups at elevated risk and the need for re-thinking and innovations to meet the challenges ahead. This includes extended inter-sectoral collaboration on a broader spectrum of residential risks besides fire, threatening the same groups for similar social and medical reasons.This updated state of knowledge is now being used as a basis for renewing current national fire safety strategies. With reference to general principles of systems control, this chapter will discuss obstacles and challenges to establish a more robust and systematic national control of the fire problem in line with the Vision Zero policy. The appropriateness of launching Vision Zero policies in fields that are not yet ripe for systematic governance is also discussed. It is concluded that a Vision Zero initiative can still be meaningful and successfully pursued, provided that limitations in the ability to influence crucial elements in the system are openly identified and systematically addressed in a process in which strategical and policy developments interact with research and innovation.
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Hell, Wolfram, Kurt Bodewig, Ute Hammer, et al. "Vision Zero in Germany." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76505-7_13.

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AbstractVision Zero has a central role in traffic safety in Germany. Finally, it was even a relevant point in the coalition treaty from the Federal Governing Parties in the year 2018.It is a unifying theme for safety measures taken on the federal, state, and local levels and in private, nonprofit traffic safety organizations. In later years, cooperation between these different agents has been intensified. Evaluation and measurability are essential in the German approach to Vision Zero. One example of this is the statistical work performed every year to identify “zero cities,” i.e., cities that had zero road fatalities the previous year. A yearly award puts focus on cities that have a particularly long string of zero years, in relation to their size. This is performed on an international level, and cities around the world are incentivized by these recognitions. Munich is used as an example of a city that has recently stepped up its traffic safety work. The city has adopted Vision Zero and followed up this with intensified traffic safety work, including improved data collection, the identification of accident black spots, targeted measures to improve safety in these black spots, safety audits of new infrastructure plans, etc. Before the introduction of new traffic technologies which may have an impact on safety, in-depth technology assessment has to be performed. This is illustrated by an example in which sufficient prior technology assessment did not take place, namely the introduction of e-scooters in Germany. After their introduction, they have turned out to be significantly more dangerous than bicycles, as can be seen from the statistics of fatalities and severe injuries. Proposals are made for measures are needed to reverse this trend, including obligatory use of helmets. The dialogue with neighbor states is also essential. Here the Traffic Expert Society of Medical and Technical Biomechanics, gmttb (Germany, Austria, and Switzerland= D A CH), has initiated to discuss and bundle basic principles of the Vision Zero in three neighbor countries. To promote Vision Zero, gmttb also organizes interdisciplinary yearly conferences with experts from Austria (Vision Zero is a state philosophy) and Switzerland (here named Via Sicura) to bundle strength and adopt ideas together with Swedish and multinational experts. As well as a yearly gmttb Vision Zero Safety Award is granted to motivate people, organizations, and manufacturers to promote good ideas for better traffic safety.
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Hell, Wolfram, Kurt Bodewig, Ute Hammer, et al. "Vision Zero in Germany." In The Vision Zero Handbook. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-23176-7_13-1.

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AbstractVision Zero has a central role in traffic safety in Germany. Finally, it was even a relevant point in the coalition treaty from the Federal Governing Parties in the year 2018.It is a unifying theme for safety measures taken on the federal, state, and local levels and in private, nonprofit traffic safety organizations. In later years, cooperation between these different agents has been intensified. Evaluation and measurability are essential in the German approach to Vision Zero. One example of this is the statistical work performed every year to identify “zero cities,” i.e., cities that had zero road fatalities the previous year. A yearly award puts focus on cities that have a particularly long string of zero years, in relation to their size. This is performed on an international level, and cities around the world are incentivized by these recognitions. Munich is used as an example of a city that has recently stepped up its traffic safety work. The city has adopted Vision Zero and followed up this with intensified traffic safety work, including improved data collection, the identification of accident black spots, targeted measures to improve safety in these black spots, safety audits of new infrastructure plans, etc. Before the introduction of new traffic technologies which may have an impact on safety, in-depth technology assessment has to be performed. This is illustrated by an example in which sufficient prior technology assessment did not take place, namely the introduction of e-scooters in Germany. After their introduction, they have turned out to be significantly more dangerous than bicycles, as can be seen from the statistics of fatalities and severe injuries. Proposals are made for measures are needed to reverse this trend, including obligatory use of helmets. The dialogue with neighbor states is also essential. Here the Traffic Expert Society of Medical and Technical Biomechanics, gmttb (Germany, Austria, and Switzerland= D A CH), has initiated to discuss and bundle basic principles of the Vision Zero in three neighbor countries. To promote Vision Zero, gmttb also organizes interdisciplinary yearly conferences with experts from Austria (Vision Zero is a state philosophy) and Switzerland (here named Via Sicura) to bundle strength and adopt ideas together with Swedish and multinational experts. As well as a yearly gmttb Vision Zero Safety Award is granted to motivate people, organizations, and manufacturers to promote good ideas for better traffic safety.
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Panagiotopoulou, Vasiliki C., Alexios Papacharalampopoulos, and Panagiotis Stavropoulos. "Developing a Manufacturing Process Level Framework for Green Strategies KPIs Handling." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-28839-5_112.

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AbstractGreen strategies in manufacturing have multifold perspectives implying that are highly diversified in terms of resources management. Popular green strategies are Zero Defect, Circularity and Sustainability. The challenges regarding resources efficiency result from different concepts addressed by each strategy; Zero Defect focuses on defect prevention via quality planning, control, and improvement, while Circularity addresses resources optimisation via resources management, material production, usage and disposal. Sustainability is a different approach, to include economic growth and social impact, besides resources management, waste management and environmental impact. Until now, key performance indicators (KPIs) have been used for individual strategy, while literature shows a lack of frameworks towards transforming KPIs when adopting more than one strategy. The current work is a step towards defining an approach describing the relationship between the KPIs of different green strategies and elaborating the repercussions of this transformation on workflows and specifically on manufacturing processes. Two different approaches could be used (monetary and qualitative) with thermoforming used as a case, and the results are indicative of the method efficiency, where KPIs for Zero Defect, Circularity and Sustainability are compared. The framework is developed to be later generalised and applied to other manufacturing processes.
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Kleinfeller, Nikolai, Christopher M. Gehb, Maximilian Schaeffner, Christian Adams, and Tobias Melz. "Assessment of Model Uncertainty in the Prediction of the Vibroacoustic Behavior of a Rectangular Plate by Means of Bayesian Inference." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_21.

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AbstractDesigning the vibroacoustic properties of thin-walled structures is of particularly high practical relevance in the design of vehicle structures. The vibroacoustic properties of thin-walled structures, e.g., vehicle bodies, are usually designed using finite element models. Additional development effort, e.g., experimental tests, arises if the quality of the model predictions are limited due to inherent model uncertainty. Model uncertainty of finite element models usually occurs in the modeling process due to simplifications of the geometry or boundary conditions. The latter highly affect the vibroacoustic properties of a thin-walled structure. The stiffness of the boundary condition is often assumed to be infinite or zero in the finite element model, which can lead to a discrepancy between the measured and the calculated vibroacoustic behavior. This paper compares two different boundary condition assumptions for the finite element (FE) model of a simply supported rectangular plate in their capability to predict the vibroacoustic behavior. The two different boundary conditions are of increasing complexity in assuming the stiffness. In a first step, a probabilistic model parameter calibration via Bayesian inference for the boundary conditions related parameters for the two FE models is performed. For this purpose, a test stand for simply supported rectangular plates is set up and the experimental data is obtained by measuring the vibrations of the test specimen by means of scanning laser Doppler vibrometry. In a second step, the model uncertainty of the two finite element models is identified. For this purpose, the prediction error of the vibroacoustic behavior is calculated. The prediction error describes the discrepancy between the experimental and the numerical data. Based on the distribution of the prediction error, which is determined from the results of the probabilistic model calibration, the model uncertainty is assessed and the model, which most adequately predicts the vibroacoustic behavior, is identified.
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Becking, Daniel, Maximilian Dreyer, Wojciech Samek, Karsten Müller, and Sebastian Lapuschkin. "ECQ$$^{\text {x}}$$: Explainability-Driven Quantization for Low-Bit and Sparse DNNs." In xxAI - Beyond Explainable AI. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04083-2_14.

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AbstractThe remarkable success of deep neural networks (DNNs) in various applications is accompanied by a significant increase in network parameters and arithmetic operations. Such increases in memory and computational demands make deep learning prohibitive for resource-constrained hardware platforms such as mobile devices. Recent efforts aim to reduce these overheads, while preserving model performance as much as possible, and include parameter reduction techniques, parameter quantization, and lossless compression techniques.In this chapter, we develop and describe a novel quantization paradigm for DNNs: Our method leverages concepts of explainable AI (XAI) and concepts of information theory: Instead of assigning weight values based on their distances to the quantization clusters, the assignment function additionally considers weight relevances obtained from Layer-wise Relevance Propagation (LRP) and the information content of the clusters (entropy optimization). The ultimate goal is to preserve the most relevant weights in quantization clusters of highest information content.Experimental results show that this novel Entropy-Constrained and XAI-adjusted Quantization (ECQ$$^{\text {x}}$$ x ) method generates ultra low-precision (2–5 bit) and simultaneously sparse neural networks while maintaining or even improving model performance. Due to reduced parameter precision and high number of zero-elements, the rendered networks are highly compressible in terms of file size, up to 103$$\times $$ × compared to the full-precision unquantized DNN model. Our approach was evaluated on different types of models and datasets (including Google Speech Commands, CIFAR-10 and Pascal VOC) and compared with previous work.
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Conference papers on the topic "Zero mode Laser"

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Broslavets, Yu Yu, A. A. Fomichev, E. A. Polukeev, V. G. Semenov, D. S. Redichkina, and A. R. Pokrovskaya. "Physical factors causing zero drift and noise in a solid-state laser gyroscope based on YAG: Cr4+ at mode locking." In 2024 International Conference Laser Optics (ICLO). IEEE, 2024. http://dx.doi.org/10.1109/iclo59702.2024.10624143.

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2

Ye, Feng, Xuanyi Liu, H. Y. Fu, and Qian Li. "Enhanced Supercontinuum generation by a dispersion-managed L-band ultrafast fiber laser pump." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jw2a.77.

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We propose the scheme using the dispersion-managed L-band mode-locked pulse (near-zero normal net-cavity dispersion) to subtly enable a distinct enhancement of octave-spanning supercontinuum with a broader bandwidth and flatter spectra.
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Lu, Heng, Xinxu Duan, Zhengxin Gao, Hongbo Jiang, and Lei Jin. "Impact of dispersion and saturation energy on the mode-locking states in an Yb-doped fiber laser with near-zero net dispersion." In Conference on Spectral Technology and Applications (CSTA 2024), edited by Zhe Wang and Hongbin Ding. SPIE, 2024. https://doi.org/10.1117/12.3037264.

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Troyanosky, Ellen K., Jianyu Liang, and Thomas L. Christiansen. "Sub-Zero Treatment of 17-4PH Stainless Steel Manufactured by Laser Powder Bed Fusion." In IFHTSE 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.ifhtse2024p0167.

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Abstract Additively manufactured (AM) metals require a modified heat treatment to accommodate for slight differences in composition caused by powder atomization and cover gas used in the manufacturing process. 17-4PH stainless steel (17-4PH) is a precipitation hardening steel which hardens through the formation of Cu precipitates in a martensitic matrix during aging treatment. The powders used in Laser Powder Bed Fusion (LPBF) fabrication of 17-4PH are typically spray atomized using N2 cover gas, which is associated with a certain amount of nitrogen uptake. Nitrogen is a potent austenite stabi
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Jia, Wenhe, Chenxin Gao, Yongmin Zhao, et al. "Intracavity spatiotemporal laser mode control using metasurfaces strongly coupled to an epsilon-near-zero material." In Nonlinear Optics. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/nlo.2023.th2a.8.

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Murray, T. W., O. Balogun, C. Prada, et al. "THEORY AND APPLICATIONS OF LASER GENERATED ZERO-GROUP VELOCITY LAMB MODE RESONANCE." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: 34th Annual Review of Progress in Quantitative Nondestructive Evaluation. AIP, 2008. http://dx.doi.org/10.1063/1.2902667.

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Bale, Brandon G., and J. Nathan Kutz. "Parabolic pulse propagation in mean-zero dispersion-managed transmission systems and mode-locked laser cavities." In SPIE Europe Optics + Optoelectronics, edited by Mario Bertolotti. SPIE, 2009. http://dx.doi.org/10.1117/12.823522.

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Niculae, Anne, and William L. Kath. "Timing jitter reduction in a fiber laser mode-locked by an input bit stream." In Nonlinear Guided Waves and Their Applications. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/nlgw.1996.sad.1.

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It has been demonstrated experimentally that an input data stream can be used to mode-lock a fiber laser, thus providing an efficient all-optical method for clock recovery.1-3 In the experiments, the incoming data pulses passed along a length of dispersion shifted fiber (DSF) that formed part of the ring laser cavity. The laser and signal wavelengths were chosen such that they straddled the zero dispersion point of the DSF, so that little walk-off occurred during propagation. In this manner, the two signals interacted through cross-phase modulation, producing sufficient phase modulation to mod
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Liu, Yusong, Bowen Liu, Yang Xiang, et al. "Dispersion-Managed Soliton Molecules in An All-Fiber Mode-Locked Fiber Laser With Near Zero Dispersion." In 2019 18th International Conference on Optical Communications and Networks (ICOCN). IEEE, 2019. http://dx.doi.org/10.1109/icocn.2019.8934326.

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Langlois, Patrick, and Michel Piché. "Self-mode-locked semiconductor laser in a ring cavity." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cpd1.3.

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We report on the generation of short (2 ps) pulses directly from a self-mode-locked semiconductor amplifier inserted in a ring cavity. The amplifier is in fact a superluminescent diode consisting of a 500 mm long double quantum-well InGaAlAs ridge waveguide with strained InGaAs active layers ; an angled stripe geometry provides a low coherence emission with a broad spectrum centered near 855 nm. The amplifier is placed in a ring cavity with three gold minors and a 83% transmission output coupler. Collimation of the laser output and careful alignment of the cavity mirrors allows laser emission
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Reports on the topic "Zero mode Laser"

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Liu, Z., and K. Le. Zero-byte Support for Bidirectional Reliable Mode (R-mode) in Extended Link-Layer Assisted RObust Header Compression (ROHC) Profile. RFC Editor, 2002. http://dx.doi.org/10.17487/rfc3408.

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Saltus, Christina, Todd Swannack, and S. McKay. Geospatial Suitability Indices Toolbox (GSI Toolbox). Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41881.

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Habitat suitability models are widely adopted in ecosystem management and restoration, where these index models are used to assess environmental impacts and benefits based on the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). Here, we present a geospatial toolbox for assessing habitat suitability. The Geospatial Suitability Indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python® 3.7 programming language and is available for use on the local desktop i
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Saltus, Christina, S. McKay, and Todd Swannack. Geospatial suitability indices (GSI) toolbox : user's guide. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45128.

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Habitat suitability models have been widely adopted in ecosystem management and restoration to assess environmental impacts and benefits according to the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). This technical report presents a geospatial toolbox for assessing habitat suitability. The geospatial suitability indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python 3.7 programming language and is available for use on the local desktop in the Window
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Felix, Meier, Wilfried Rickels, Christian Traeger, and Martin Quaas. Working paper published on NETs in strategically interacting regions based on simulation and analysis in an extended ACE model. OceanNets, 2022. http://dx.doi.org/10.3289/oceannets_d1.5.

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Net-zero climate policies foresee deployment of atmospheric carbon dioxide removal wit geological, terrestrial, or marine carbon storage. While terrestrial and geological storage would be governed under the framework of national property rights, marine storage implies that carbon is transferred from one global common, the atmosphere, to another global common, the ocean, in particular if storage exceeds beyond coastal applications. This paper investigates the option of carbon dioxide removal (CDR) and storage in different (marine) reservoir types in an analytic climate-economy model, and derive
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Meier, Felix, Wilfried Rickels, Christian Traeger, and Martin Quaas. Working paper published on NETs in strategically interacting regions based on simulation and analysis in an extended ACE model. OceanNets, 2023. http://dx.doi.org/10.3289/oceannets_d1.5_v2.

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Net-zero climate policies foresee deployment of atmospheric carbon dioxide removal wit geological, terrestrial, or marine carbon storage. While terrestrial and geological storage would be governed under the framework of national property rights, marine storage implies that carbon is transferred from one global common, the atmosphere, to another global common, the ocean, in particular if storage exceeds beyond coastal applications. This paper investigates the option of carbon dioxide removal (CDR) and storage in different (marine) reservoir types in an analytic climate-economy model, and derive
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