Academic literature on the topic 'Ultrashort pulse trains'

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Journal articles on the topic "Ultrashort pulse trains"

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YAN, LI-XIN, JIAN-FEI HUA, YING-CHAO DU та ін. "UV pulse trains by α-BBO crystal stacking for the production of THz-rap-rate electron bunches". Journal of Plasma Physics 78, № 4 (2012): 429–31. http://dx.doi.org/10.1017/s0022377812000281.

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AbstractUltrashort electron bunch trains can be used for plasma wake field acceleration (PWFA) to overcome the limit of transformer ratio of a single electron bunch, or high-power terahertz (Thz) radiation production by various radiation mechanisms. Basic facility for high-power THz radiation development based on ultrashort electron beam has been set up at accelerator lab of TUB. Using birefringent crystal serials, ultraviolet (UV) pulse shaping for photocathode radio frequency gun to produce THz-repetition-rate pulse train was realized. Driven by such pulses, ultrashort electron bunch train w
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Feist, Armin, Katharina E. Priebe, Christopher Rathje, et al. "Generation and attosecond shaping of high coherence free-electron beams for ultrafast TEM." EPJ Web of Conferences 205 (2019): 08012. http://dx.doi.org/10.1051/epjconf/201920508012.

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We demonstrate the generation and optical control of ultrashort high-coherence electron pulses. The free-electron quantum state is phase-modulated in the longitudinal and transverse dimensions, and the formation of attosecond electron pulse trains is quantitatively probed.
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Hao, Ruiyu, Aitang Ju, Fuqian Wang, and Guosheng Zhou. "Generation and propagation of pulse trains with ultrashort pulse separation." Optics Communications 281, no. 23 (2008): 5898–901. http://dx.doi.org/10.1016/j.optcom.2008.08.037.

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Torres-Company, Víctor, Hanna Lajunen, and Ari T. Friberg. "Coherence theory of noise in ultrashort-pulse trains." Journal of the Optical Society of America B 24, no. 7 (2007): 1441. http://dx.doi.org/10.1364/josab.24.001441.

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da Silva, J. I., and A. S. B. Sombra. "Pulse position modulation (PPM) of ultrashort pulse trains in optical fibers." Optics Communications 152, no. 1-3 (1998): 59–64. http://dx.doi.org/10.1016/s0030-4018(98)00154-0.

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Stepovik, A. P., E. Yu Shamaev, D. V. Khmel’nitskii, et al. "Malfunctioning of Microcontroller Irradiated with Ultrashort Ultrabroadband Pulse Trains." Journal of Communications Technology and Electronics 63, no. 3 (2018): 264–69. http://dx.doi.org/10.1134/s1064226918030191.

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Komarov, A., F. Amrani, A. Dmitriev, K. Komarov, D. Meshcheriakov, and F. Sanchez. "Multiple-Pulse Operation and Bound States of Solitons in Passive Mode-Locked Fiber Lasers." International Journal of Optics 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/418469.

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We present results of our research on a multiple-pulse operation of passive mode-locked fiber lasers. The research has been performed on basis of numerical simulation. Multihysteresis dependence of both an intracavity energy and peak intensities of intracavity ultrashort pulses on pump power is found. It is shown that the change of a number of ultrashort pulses in a laser cavity can be realized by hard as well as soft regimes of an excitation and an annihilation of new solitons. Bound steady states of interacting solitons are studied for various mechanisms of nonlinear losses shaping ultrashor
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Cajiao Vélez, Felipe, Jerzy Kamiński, and Katarzyna Krajewska. "Electron Scattering Processes in Non-Monochromatic and Relativistically Intense Laser Fields." Atoms 7, no. 1 (2019): 34. http://dx.doi.org/10.3390/atoms7010034.

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The theoretical analysis of four fundamental laser-assisted non-linear scattering processes are summarized in this review. Our attention is focused on Thomson, Compton, Møller and Mott scattering in the presence of intense electromagnetic radiation. Depending on the phenomena under considerations, we model the laser field as a single laser pulse of ultrashort duration (for Thomson and Compton scattering) or non-monochromatic trains of pulses (for Møller and Mott scattering).
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Renard, Mathias, R. Chaux, B. Lavorel, and O. Faucher. "Pulse trains produced by phase-modulation of ultrashort optical pulses: tailoring and characterization." Optics Express 12, no. 3 (2004): 473. http://dx.doi.org/10.1364/opex.12.000473.

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Wang, Andong, Amlan Das, and David Grojo. "Three-dimensional laser writing inside silicon using THz-repetition-rate trains of ultrashort pulses." EPJ Web of Conferences 238 (2020): 12014. http://dx.doi.org/10.1051/epjconf/202023812014.

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Three-dimensional laser writing inside silicon remains today inaccessible with the shortest infrared light pulses unless complex schemes are used to circumvent screening propagation nonlinearities. Here, we explore a new approach irradiating silicon with trains of femtosecond laser pulses at repetition rates up to 5.6 THz. This extremely high repetition rate is faster than laser energy dissipation from microvolume inside silicon, thus enabling unique capabilities for pulse-to-pulse accumulation of free carriers generated by nonlinear ionization, as well as progressive thermal bandgap closure b
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Dissertations / Theses on the topic "Ultrashort pulse trains"

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Soares, Antonio Augusto. "Acúmulo coerente de excitação na transparência eletromagneticamente induzida por um trem de pulsos ultracurtos." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278178.

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Orientador: Luis Eduardo Evangelista de Araujo<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-14T22:09:31Z (GMT). No. of bitstreams: 1 Soares_AntonioAugusto_D.pdf: 11187832 bytes, checksum: 3ffb3d078fef8dd053b760fc0342ec6f (MD5) Previous issue date: 2009<br>Resumo: Nesta tese apresentamos um estudo teórico da interação coerente entre trens de pulsos ultracurtos e sistemas atômicos simples de dois e três níveis, este último na configuração L. Primeiramente avaliamos a situação em que um trem de pulsos ultr
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Vidal, Sébastien. "Étude théorique et expérimentale de la génération et de la mise en forme d'impulsions térahertz." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2009. http://tel.archives-ouvertes.fr/tel-00446512.

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Cette thèse présente l'étude théorique et expérimentale de la génération et de la mise en forme d'impulsions térahertz (THz). Dans un premier temps, nous avons étudié la génération d'impulsions THz par redressement optique d'impulsions laser femtosecondes intenses dans des cristaux semiconducteurs de ZnTe. Nous avons mis en évidence une forte dépendance de l'efficacité de ce processus de génération avec l'intensité de l'impulsion laser génératrice. Ceci se traduit en particulier par un décalage progressif du spectre vers les basses fréquences et par une évolution anormale de l'énergie THz avec
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Escoto, Esmerando [Verfasser], Günter [Gutachter] Steinmeyer, Thomas [Gutachter] Feurer, and Tim [Gutachter] Schröder. "Measurement of Pulse Train Instability in Ultrashort Pulse Characterization / Esmerando Escoto ; Gutachter: Günter Steinmeyer, Thomas Feurer, Tim Schröder." Berlin : Humboldt-Universität zu Berlin, 2020. http://d-nb.info/1206588020/34.

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Atuba, Sunday. "Generation of a train of ultrashort pulses through the propagation of periodic wave in photonic crystal fibres." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=233638.

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Feist, Armin. "Next-Generation Ultrafast Transmission Electron Microscopy – Development and Applications." Thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E48B-B.

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Book chapters on the topic "Ultrashort pulse trains"

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Fortier, Tara M., David J. Jones, Jun Ye, Steven T. Cundiff, and Robert S. Windeler. "Long term (>300 seconds) carrier-envelope phase coherence of a train of ultrashort pulses." In Ultrafast Phenomena XIII. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-59319-2_55.

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Conference papers on the topic "Ultrashort pulse trains"

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Huang, Jing, Yuwen Zhang, J. K. Chen, and Mo Yang. "Modeling of Ultrafast Phase Change Processes in a Thin Metal Film Irradiated by Femtosecond Laser Pulse Trains." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12342.

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Ultrashort laser pulses can be generated in the form of a pulse train. In this paper, the ultrafast phase change processes of a 1-μm free-standing gold film irradiated by femtosecond laser pulse trains are simulated numerically. A two-temperature model coupled with interface tracking method is developed to describe the ultrafast melting, vaporization and resolidification processes. To deal with the large span in time scale, variable time steps are adopted. A laser pulse train consists of several pulse bursts with a repetition rate of 0.5∼1 MHz. Each pulse burst contains 3∼10 pulses with an int
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Feng, S., and H. G. Winful. "Cavity phase engineering for shape-invariant ultrashort pulse trains." In Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39. IEEE, 2000. http://dx.doi.org/10.1109/cleo.2000.907283.

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Stoian, R., M. Boyle, A. Thoss, et al. "Processing of dielectric materials with shaped, ultrashort pulses and THz pulse trains." In CLEO 2001. Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest. IEEE, 2001. http://dx.doi.org/10.1109/cleo.2001.948183.

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Dommers, S., V. V. Temnov, U. Woggon, et al. "Gain Dynamics after Ultrashort Pulse Trains in Quantum Dot based Semiconductor Optical Amplifiers." In CLEO 2007. IEEE, 2007. http://dx.doi.org/10.1109/cleo.2007.4452594.

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Balanov, Amnon, Alexey Gorlach, and Ido Kaminer. "Generation of tunable ultrashort X-ray pulses and delta-pulse trains in van der Waals materials." In CLEO: QELS_Fundamental Science. OSA, 2021. http://dx.doi.org/10.1364/cleo_qels.2021.ftu1l.5.

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Jiao, Jian, and Zhixiong Guo. "Simulation of Focused Radiation Propagation and Transient Heat Transfer in Turbid Tissues." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88261.

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Thermal analysis of a cylindrical tissue subject to a train of ultrashort pulse irradiations was made by developing a combined time-dependent radiation and conduction bio-heat transfer model. Ultrashort pulsed radiation transport in the cylindrical tissue is simulated using the transient discrete ordinate method. Treatment of focused beam is introduced. The model skin tissue is stratified as three layers with different optical, thermal and physiological properties. Comparisons between the collimated irradiation and focused beam are conducted. The effect of pulse train is investigated.
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Jiao, Jian, and Zhixiong Guo. "Bio-Heat Transfer in a Model Skin Subject to a Train of Short Pulse Irradiation." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66368.

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Thermal analysis of biological tissues subject to a train of ultrashort pulse irradiations was made of developing a combined time-dependent radiation and conduction bio-heat transfer model. A model skin tissue stratified as three layers with different optical, thermal and physiological properties was considered. Temperature response of the skin tissue exposed to a single ultrashort pulse irradiation was firstly analyzed by the finite volume method in combination with the transient discrete ordinates method. This temperature rise was found to reach pseudo steady state within an extremely short
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Kim, Kyunghan, and Zhixiong Guo. "Ultrafast Laser Radiation and Conduction Heat Transfer in Biological Tissues." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80873.

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Ultrafast laser radiation heat transfer in biological tissues is governed by time-dependent equation of radiative transfer and modeled using the transient discrete ordinates method. The divergence of radiative heat flux is then obtained and used for predicting the local temperature response due to radiation energy absorption within the ultrashort time period. To this end, the lumped method is employed and heat diffusion is negligible. Both single pulse and pulse train irradiations are considered. For the single pulse irradiation, the transient radiation field is obtained and the local temperat
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Jiang, L., and H. L. Tsai. "Modeling of Ultrashort Pulse-Train Laser Heating of Metal Films." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72199.

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Recently, a new laser micromachining technique using multiple ultrashort pulses with a picosecond-to-nanosecond separation as a train group has demonstrated some promising application potential, which also has high scientific merits in micro-/nano-scale ultrafast energy transport. However, the underlying physics of this technique remain poorly understood. In this study, the improved two-temperature model recently developed by the authors is used to analyze the pulse train technology, in which the full-run quantum treatments are used to calculate the significantly varying properties, including
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Hovhannisyan, Mariam, and Gevorg Muradyan. "Coherence as ultrashort pulse train generator." In International Conference on Laser Physics 2010, edited by Aram V. Papoyan. SPIE, 2010. http://dx.doi.org/10.1117/12.890906.

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