Relevant bibliographies by topics / Pulsed mode

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

Academic literature on the topic 'Pulsed mode'

Author: Grafiati
Published: 30 May 2022
Last updated: 22 June 2025

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Journal articles on the topic "Pulsed mode"

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Flood, C. J., G. Giuliani, and H. M. van Driel. "Pulsed electro-optic modulation for efficient, active continuous-wave laser mode-locking." Canadian Journal of Physics 71, no. 1-2 (1993): 1–4. http://dx.doi.org/10.1139/p93-001.

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We demonstrated efficient active mode-locking of a Nd:YAG laser using broad bandwidth, pulsed electro-optic modulation. A 10 GHz, LiTaO3 traveling wave phase modulator, driven by 300 ps FWHM electrical pulses with less than 1 mW of drive power, was used to generate detector-limited, mode-locked laser pulses of less than 50 ps duration at 76 MHz. Shorter modulator drive pulses are possible and near bandwidth-limited mode-locked pulses should be attainable. The use of pulsed modulation rather than conventional sinusoidal modulation permits both pulse width and pulse build-up time reductions and generally makes active mode-locking competitive with passive mode-locking for relatively low-gain and narrow-bandwidth lasers.
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Kazachkov, E. L., O. V. Safronov, E. A. Kazachkova, E. N. Ignatieva, I. V. Safronova, and L. B. Tarasova. "Morphological substantiation of laser exposure parameters and modes for surgical treatment of intrauterine pathology." Ural Medical Journal 22, no. 2 (2023): 24–33. http://dx.doi.org/10.52420/2071-5943-2023-22-2-24-33.

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Introduction No data on experimentally substantiated parameters and modes of diode laser radiation allowing a minimally traumatic surgical treatment of intrauterine pathology have been found in the literature.The aim of the investigation was to substantiate experimentally the optimum parameters and modes of diode laser radiation in the treatment of intrauterine pathology based on the study of morphological changes in the endometrium.Materials and methods 48 endometrial samples were exposed to 10-40 W diode laser power in a constant mode and 15 samples - in a pulsed mode with 3 different sets of laser exposure parameters. The data were statistically processed using Microsoft Excel spreadsheets, version 16.49. The differences were considered statistically significant at р<0.05.Results Width of the ablation zone, lateral coagulation and hyperthermic exposure zone was calculated at the most optimal parameters of laser energy (20 W), achieving adequate cutting and bleeding properties of the laser. The most effective in the pulsed mode of laser operation was 30 W amplitude power of radiation, the pulse duration of 100 ms, the duration of the interval between pulses of 50 ms, the average power of 20 W.Discussion Comparative analysis of morphometric parameters in the action of laser radiation in the constant mode with a radiation power of 20 W and in the pulsed mode with an average laser power of 20 W has shown that the structural parameters have significantly lower values in the pulsed laser mode.Conclusion Optimal cutting properties of the laser are observed when constant laser irradiation with a power of 20 W is used. The best cutting and bleeding properties were demonstrated by the pulsed laser mode with an average power of 20 W, amplitude power of 30 W, pulse duration of 100 ms, and inter-pulse interval of 50 ms.
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Shemyakin, A. N., M. Yu Rachkov, N. G. Solov’ev та M. Yu Yakimov. "Radiation Power Control of the Industrial CO2 Laser Excited by а Nonself-Sustained Glow Discharge by Changing the Frequency of Ionization Pulses". Mekhatronika, Avtomatizatsiya, Upravlenie 21, № 4 (2020): 224–31. http://dx.doi.org/10.17587/mau.21.224-231.

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The article describes radiation power control of industrial CO2 lasers of Lantan series excited by а nonself-sustained glow discharge in the automatic mode. These lasers are closed-cycle fast gas-transport lasers excited by a nonself-sustained glow discharge with ionization by periodic-pulsed capacitively coupled auxiliary discharge. In this case, ionization and conductivity are provided by periodic-pulsed capacitively coupled discharge. The energy contribution to molecular oscillations is provided by the passage of the main discharge current through the plasma with electron density given by ionization. This permits easy laser power control, provides excellent optical homogeneity and stability of an active volume together with high laser efficiency. A system of a nonself-sustained glow discharge with ionization by periodic-pulsed capacitively coupled auxiliary discharge, the stages of creation and brief characteristics of the Lantan series lasers is presented. The method of controlling the power of laser radiation by changing the frequency of the ionization pulses is determined. This control method allows operating of the laser in continuous and in pulse-periodic modes with adjustable pulse ratio and pulse duration, and also provides switching from one mode to another. In the continuous mode, the radiation power is controlled by changing the frequency of ionization pulses, which are high voltage pulses with duration of 100 ns, given with the frequency of 1-5 kHz. Pulse-periodic radiation control is performed by modulating ionization pulses that consists of pulses being delivered in batches. The frequency of the pulses in a batch determines the radiation power in a pulse. The frequency of the batches following is the frequency of the pulse mode, and the length of the batch determines the pulses duration. Based on the experimental data, the dependence of the radiation power on the ionization pulses frequency was determined. An experimental system is presented and the measuring accuracy of the laser radiation power and the frequency of ionization pulses is determined. Data acquiring and processing of experimental results were performed using the NI 6008 USB data acquisition device in the LabVIEW programs of National Instruments. To study the dependence of the laser power on Мехатроника, автоматизация, управление, Том 21, № 4, 2020 231 the frequency of the ionization pulses, a regression analysis method was applied. Studies have shown that the dependence of the laser power on the ionization pulses frequency is linear in a wide range of parameters. The equation of the direct regression is calculated. The confidence estimates of the coefficients of the direct regression and the confidence estimates of the deviation of the theoretical direct regression from the empirical one are calculated with a confidence level of 95%.
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Ge, Boyuan, Yajun Lou, Silin Guo, Yue Cai, and Xinhai Zhang. "A High-Energy, Wide-Spectrum, Spatiotemporal Mode-Locked Fiber Laser." Micromachines 15, no. 5 (2024): 644. http://dx.doi.org/10.3390/mi15050644.

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In this article, we demonstrate a high-energy, wide-spectrum, spatiotemporal mode-locked (STML) fiber laser. Unlike traditional single-mode fiber lasers, STML fiber lasers theoretically enable mode-locking with various combinations of transverse modes. The laser can deliver two different STML pulse sequences with different pulse widths, spectra and beam profiles, due to the different compositions of transverse modes in the output pulses. Moreover, we achieve a wide-spectrum pulsed output with a single-pulse energy of up to 116 nJ, by weakening the spectral filtering and utilizing self-cleaning. Strong spatial and spectral filtering are usually thought to be necessary for achieving STML. Our experiment verifies the necessity of spatial filtering for achieving STML, and we show that weakening unnecessary spectral filtering provides an effective way to increase the pulse energy and spectrum width of mode-locked fiber lasers.
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Kokovin, A. O., A. V. Kozyrev, and V. Yu Kozhevnikov. "Simulation of negative corona discharge in atmospheric air: from mode of Trichel pulses to stationary discharge." Journal of Physics: Conference Series 2064, no. 1 (2021): 012024. http://dx.doi.org/10.1088/1742-6596/2064/1/012024.

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Abstract The paper presents a 2D multi-fluid non-stationary model of a negative corona discharge in atmospheric-pressure air in the needle-to-plane diode. Discharges were simulated in gaps up to 1 cm with an applied voltage in the range of 8-100 kV. The simulation results demonstrate two stages of the discharge evolution: a pulsed-periodic stage called the Trichel pulses mode and a stationary glow discharge mode. The spatio-temporal distributions of the discharge plasma and electric field are shown in detail. Physical mechanism of Trichel pulses formation and transition to the stationary discharge are also revealed. The duration of the Trichel pulse mode gradually decreases with increasing of the applied voltage.
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Morozovych, V. V., and Yu O. Lyashenko. "Morphological structure of galvanized copper layers in inhomogeneous regimes." Cherkasy University Bulletin: Physical and Mathematical Sciences, no. 1 (2022): 64–73. http://dx.doi.org/10.31651/2076-5851-2021-64-73.

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The microstructure of copper layers obtained by electrodeposition in stationary, pulsed and stochastic modes on copper substrates was studied by means of scanning electron microscopy. It was found that the shape of the applied grains differs significantly in the case of pulsed and stationary application modes. The technology of production of electrodeposited layers in stationary, pulse and stochastic modes of copper on copper substrates is worked out in the work. The developed automated software and hardware complex was used to control the electrodeposition process. The effect of electrodeposition in different modes on the structure of copper surface layers was investigated using scanning electron microscopy. Qualitative examination of SEM images of electrodeposited surfaces showed that in the case of stochastic and stationary modes of electrodeposition, a coating with a larger grain size is formed than in the case of pulsed deposition. It should also be noted that the shape of the applied grains is significantly different in the case of pulsed and stationary application modes. In the process of electrodeposition in the stationary mode, sediment is formed in the form of conglomerates of grains of different sizes, while in the pulse mode, a uniform grain structure is formed. The shape of the grains formed in the process of electrodeposition in the stochastic mode is different in that the coating has areas with evenly distributed grains and conglomerates of grains. The average grain size in the electrodeposited layers obtained using the pulse mode increases with increasing pulse period. It was also found that the average grain size is smaller in the case of the stochastic application method than in the case of the pulsed method, for the same average current density
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Ustimchik, V., E. Motorin, and V. Filippov. "High peak/average power picosecond pulsed MOPA system with tapered large mode area double-clad Yb-doped fiber." EPJ Web of Conferences 266 (2022): 11014. http://dx.doi.org/10.1051/epjconf/202226611014.

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In this paper, a high peak/average power picosecond pulsed master‑oscillator power‑amplifier (MOPA) system utilizing tapered large mode area double-clad fiber (T-DCF) is presented. In a high average power regime, we report a pulsed MOPA laser system with average power up to 613 W at 20 MHz repetition rate with 50 ps pulse duration (613 kW of peak power and 30.6 μJ pulse energy). In high peak power regime, over 3MW of peak power pulses (at seed source bandwidth) at 1 MHz repetition rate (310 μJ pulse energy and 310 W average) was demonstrated. The outstanding properties of T-DCF for amplification of laser signals to high power/energy levels with maintaining the excellent beam quality open a new horizon for advanced laser material processing.
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Kandratsyeu, Aleh, Uladzimir Sabaleuski, Luis Redondo, and Andrei G. Pakhomov. "Four Channel 6.5 kV, 65 A, 100 ns–100 µs Generator with Advanced Control of Pulse and Burst Protocols for Biomedical and Biotechnological Applications." Applied Sciences 11, no. 24 (2021): 11782. http://dx.doi.org/10.3390/app112411782.

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Pulsed electric fields in the sub-microsecond range are being increasingly used in biomedical and biotechnology applications, where the demand for high-voltage and high-frequency pulse generators with enhanced performance and pulse flexibility is pushing the limits of pulse power solid state technology. In the scope of this article, a new pulsed generator, which includes four independent MOSFET based Marx modulators, operating individually or combined, controlled from a computer user interface, is described. The generator is capable of applying different pulse shapes, from unipolar to bipolar pulses into biological loads, in symmetric and asymmetric modes, with voltages up to 6.5 kV and currents up to 65 A, in pulse widths from 100 ns to 100 µs, including short-circuit protection, current and voltage monitoring. This new scientific tool can open new research possibility due to the flexibility it provides in pulse generation, particularly in adjusting pulse width, polarity, and amplitude from pulse-to-pulse. It also permits operating in burst mode up to 5 MHz in four independent channels, for example in the application of synchronized asymmetric bipolar pulses, which is shown together with other characteristics of the generator.
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Giner, J., V. Gimeno, G. V. Barbosa-Cánovas, and O. Martín. "Effects of Pulsed Electric Field Processing on Apple and Pear Polyphenoloxidases." Food Science and Technology International 7, no. 4 (2001): 339–45. http://dx.doi.org/10.1106/mj46-8j9u-1h11-t0ml.

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The feasibility of inhibiting polyphenoloxidase from apple and pear by pulsed electric field processing was evaluated. These treatments significantly lowered polyphenoloxidase activity of enzyme extracts from apple ( Golden deliciousvar.) and pear ( Blanquillavar.). Exponential decay pulses were generated by a laboratory scale electric pulse generator and applied in bipolar mode. Pulse duration was 0.02 ms and electric field intensities were up to 24.6 kV/cm. The temperature of samples never exceeded 15 ºC during pulsed electric field processing treatments. Polyphenoloxidase activities were reduced up to 3.15% and 38.0% initial value in apple extract at 24.6 kV/cm and pear extract at 22.3 kV/cm both for 6 ms total treatment time, respectively. Apple and pear polyphenoloxidase exposed to pulsed electric field processing diminishes their activities following first order kinetics. Rate constants ranged from 132 to 440 ms 1 for apple polyphenoloxidase, whereas for pear 1 and changed exponentially with the applied electric field intensity. Residual polyphenoloxidase activity was correlated to energy density by an exponential decay model.
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Nikitin, V. S., T. N. Ostanina, V. M. Rudoy, and N. I. Ostanin. "A Model Describing the Process of the Electrodeposition of Zinc Loose Deposits in Pulsed Current Modes." Электрохимия 59, no. 7 (2023): 391–403. http://dx.doi.org/10.31857/s0424857023070071.

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A phenomenological model describing the change in the structural characteristics of loose zinc deposits obtained in pulsed current modes is presented. Comparison of experimental data on the structural properties of deposits with the results of model calculations indicates the adequacy of the model. To describe the features of the dendritic deposit growth and to determine the duration of the homogeneous structure formation in pulsed modes, the concept of critical thickness is introduced, at which a sharp change in the loose deposit density occurs. The dependence of the zinc deposit critical thickness on the pulse duty ratio under pulsed current modes is determined. The increasing of the pulse duty ratio leads to denser deposits with rounded dendrite shapes and fewer growth points, as compared with the deposit obtained in galvanostatic mode.
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Dissertations / Theses on the topic "Pulsed mode"

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Yagci, Mahmut Emre. "Development Of A Picosecond Pulsed Mode-locked Fiber Laser." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615773/index.pdf.

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Fiber lasers represent the state-of-the-art in laser technology and hold great promise for a wide range of applications because they have a minimum of exposed optical interfaces, very high efficiency, and are capable of exceptional beam quality. In the near future, the most important markets such as micromachining, automotive, biomedical and military applications will begin to use this technology. The scope of this thesis is to design and develop a short picosecond pulsed fiber laser using rare-earth doped fiber as a gain medium. The proposed master oscillator power amplifier (MOPA) will be used to generate pulses with high repetition rates. In this study, first we explain the basic theoretical background of nonlinear optics and fiber laser. Then, the numerical simulation will be introduced to explain how the laser system design and optimization. The simulation is based on nonlinear Schr&ouml<br>dinger equation with the method of split-step evaluation. The brief theoretical background and simulation results of the laser system will be shown. Finally, the experimental study of the developmental fiber laser system that comprises an oscillator, preamplifier and power amplifier will be discussed.
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Yuksel, Yuksel. "Thermoelectric Cooling Of A Pulsed Mode 1064 Nm Diode Pumped Nd:yag Laser." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612550/index.pdf.

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Since most of the energy input is converted to thermal energy in laser applications, the proper thermal management of laser systems is an important issue. Maintaining the laser diode and crystal temperature distributions in a narrow range during the operation is the most crucial requirement for the cooling of a laser system. In the present study, thermoelectric cooling (TEC) of a 1064 nm wavelength diode pumped laser source is investigated both experimentally and numerically. During the heat removal process, the thermal resistance through and between the materials, the proper integration of the TEC assembly, and the heat sink efficiency become important. For the aim of evaluating and further improving the system performance, various assembly configurations, highly conductive components, efficient interface materials and heat sink alternatives are considered. Several experiments are conducted during the system development stage, and parallel numerical simulations are performed both for comparison and also for providing valuable input for the system design. Results of the experiments and the simulations agree well with each other. As the laser device works in the transient regime, the experiments and the simulations are also implemented in this regime. In the final part of the study, the experiments are performed under the actual device working conditions. It is proved that with the designed TEC module and the copper heat sink system, the laser device can operate longer than the required operational time successfully.
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Hoogland, Sjoerd. "Optically pumped vertical external cavity surface emitting semiconductor lasers." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289504.

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Santos, José Angel. "Transcutaneous pulsed mode power delivery to implants for the treatment of atrial fibrillation." Thesis, University of Ulster, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251911.

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Dilwith, Jason. "Feasibility Study of Laser Ablation using Long Pulsed 300W, CW Single Mode Fiber Laser." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-06132005-191622/.

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Many applications now require micro sized holes that are difficult to produce with conventional methods. The entrance of lasers in the industry has brought about a better method for producing these holes. However the ultra-short pulse lasers that are normally used are extremely expensive and require many pulses to remove the material due to the small amount of energy they deposit. The objective of this research is to examine the feasibility of laser ablation using a 300W, CW Single Mode fiber laser which has high continuous power output for each pulse and has excellent beam quality. The results show that laser ablation occurs when a 100mm lens is used with pulse durations at 40 microseconds or below. Using one 18 microsecond pulse, a blind hole of 43.6 microns in diameter and 23.6 microns in depth with an aspect ratio of 0.54 can be created with little heat affected zone. This performance is comparable to nanosecond lasers, but with much higher hole depth per pulse. It was also found that the pulse duration must be short enough so that the ablating effect of the initial spike of an enhanced pulse is not nullified due to melting. At longer pulse durations (50 microseconds or more), raised surfaces are created instead of holes.
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Eryilmaz, Ertan. "Design And Construction Of A Cw Mode Nd:yag Laser Prototype." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605521/index.pdf.

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In this thesis a theoretical background of Nd:YAG lasers has been presented and key parameters of a design have been stated. Both pulsed mode and CW mode designs have been made<br>a 500mJ xenon flash lamp has been investigated as the pulsed light source and a 500W tungsten halogen lamp has been used as the continuous light source for optical pumping. Closed cooling system has been constructed. De-ionized water has been used as coolant. The goal has been acomplished by constructing a CW mode prototype. The output power has been calculated. Dependence of output power to the reflectivity of output coupler is simulated and optimum reflectivity is calculated. Theoretical emission bands of Nd:YAG have been observed experimentally.
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Афанасьева, О. В., та А. В. Коптяков. "Лазерная очистка металлов". Thesis, Science and education LTD, 2019. http://openarchive.nure.ua/handle/document/9247.

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Miracoli, Rosalba. "Characterization of microwave discharge ion source for high protom beam production in cw and pulsed mode." Thesis, Università degli Studi di Catania, 2011. http://hdl.handle.net/10761/182.

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This thesis consist of an introduction to the plasma physics of Microwave Discharge Ion Source (MDIS) and a review of the result obtained including discussion of related work. This thesis begin with a theoretical discussion dealing with plasma physics relevant for the production of intense proton beam in MDIS. This is followed by an historical overview on the production of high current beams by the 2.45 GHz microwave ion sources. The experimental part of the work consist of the studies related to MDIS plasma physics. For each source the most important parameters are the maximum beam current and the intensity of the single ion species. So the total beam current and the proton beam was studied as a function of different experimental set-up. In order to make a meaningful analysis, further measurements are required, regarding the quality of the ion beam. The quality of the ion beam extracted from an ion source is characterized by the beam emittance; for high quality ion beams the emittance should be as small as possible. Emittance measurements were carried out for two source: the VIS source operating in cw mode and the SHILI source operating in pulsed mode. The main limitation of MDIS, in fact, consists of the so called electromagnetic cutoff, which naturally fixes the upper boundary of the plasma density which can be reached at a given frequency. Passive and active techniques can be used on the purpose to overcome this limit. Finally, another active mechanism was tested on a device very similar to the VIS source: we tried to employ an innovative mechanisms of plasma ignition based on electrostatic waves (ESW).
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Fang, Qiang. "2 μm Pulsed Fiber Laser Sources and Their Application in Terahertz Generation". Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/232475.

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In this dissertation, an all-fiber-based single frequency nanosecond pulsed laser system at ~ 1918.4 nm in master-oscillator-power-amplifier (MOPA) configuration is present. The nanosecond pulse seed is achieved by directly modulating a continuous wave (CW) single frequency fiber laser using a fast electro-optical modulator (EOM) driven by an arbitrary waveform generator (AWG). One piece of single mode, large core, polarization-maintaining (PM) highly thulium-doped (Tm-doped) germanate glass fiber (LC-TGF) is used to boost the pulse power and pulse energy of these modulated pulses in the final power amplifier. This laser system can work in both high power and high energy regime: in high power regime, to the best of our knowledge, the highest average power 16 W and peak power 78.1 kW are achieved for single frequency transform-limited ~2.0 ns pulses at 500 kHz and 100 kHz repetition rate, respectively: In high energy regime, nearly 1 mJ and half mJ pulse energy is obtained for ~15 ns pulses at 1 kHz repetition rate and 5 kHz repetition rate, respectively. Theoretical modeling of the large-core highly Tm-doped germanate glass double-cladding fiber amplifier (LC-TG-DC-FA) is also present for 2&mum nanosecond pulse amplification. A good agreement between the theoretical and experimental results is achieved. The model can simulate the evolution of pump power, signal energy, pulse shape and the amplified stimulated emission (ASE) in the amplifier. It can also be utilized to investigate the dependence of the stored energy in the LC-TGF on the pump power, seed energy and repetition rate, which can be used to design and optimize the LC-TG-DC-FA to achieve higher pulse energy and average power. Two channel of high energy nanosecond pulses (at 1918.4 nm and 1938 nm) are utilized to generate THz wave in a quasi-phase-matched (QPM) gallium arsenide (GaAs) based on difference frequency generation. THz wave with ~ 5.4μW average power and ~18 mW peak power has been achieved. Besides, one model is built to simulate a singly resonated THz parametric oscillator. The threshold, the dependence of output THz energy on pump energy has been investigated through this model. One pump enhanced THz parametric oscillator has been proposed. The enhancement factor of the nanosecond pulses in a bow-tie ring cavity has been calculated for different pulse duration, cavity length and the transmission of the coupler. And the laser resonances in the ring cavity have been observed by using a piezo to periodically adjust the cavity length. We also build an all-fiber thulium-doped wavelength tunable mode-locked laser operating near 2&mum. Reliable self-starting mode locking over a large tuning range (>50 nm) using fiber taper based carbon nanotube (FTCNT) saturable absorber (SA) is observed. Spectral tuning is achieved by stretching another fiber taper. To the best of our knowledge, this is the first demonstration of an all-fiber wavelength tunable mode-locked laser near 2&mum.
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Venkatraman, Dheera. "Tools for quantum optics : pulsed polarization-maintaining Er-doped fiber laser and spatial mode manipulation in spontaneous parametric downconversion." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42115.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 50-52).<br>Two separate projects were undertaken to improve technology for entangled photon sources, useful for quantum optics. In one project, a pulsed, mode-locked erbium-doped fiber laser, designed to be used as a seed laser for a 390 nm source, was built using polarization-maintaining components to address polarization drift. The fiber laser operated at a center wavelength of 1560.0 nm with an output power of 1 to 2.5 mW, and mode-locked with a repetition rate of 31.1 MHz. The laser also exhibited bandwidth tunability from 0.045 to 0.095 nm, as a function of the input pump power. A commercial 5 W erbium-doped fiber amplifier and a second harmonic generation crystal were used to obtain pulses at 780 nm with an average power of 3 W. The next second harmonic generation stage, for generating the desired 390 nm output, remains to be built. In the second project, we tried to optimize the coupling efficiency of light generated from spontaneous parametric downconversion (SPDC) into single-mode optical fibers, which are useful for transporting entangled photons. Using a setup with a tunable 532 nm pump waist in a nonlinear crystal, we achieved an effective coupling efficiency of 48.8% of the 797 nm signal light into a single-mode fiber, higher than previously obtained in the laboratory. Efficient single-mode operation of SPDC would enable the construction of a high-flux fiber-coupled source of nondegenerate entangled photons at 797 nm and 1600 nm.<br>by Dheera Venkatraman.<br>M.Eng.
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Books on the topic "Pulsed mode"

1

Santos, Jose Angel. Transcutaneous pulsed mode power delivery to implants for the treatment of atrial fibrillation. The author], 2002.

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Kim, Jong Ryul. Dose analysis of the Model 112A Pulserad Pulsed X-Ray Generator by ITS/CYLTRAN. Naval Postgraduate School, 1989.

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Herrmann, Joachim. Lasers for ultrashort light impulses. North-Holland, 1987.

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Cord, Gregory A. Free electron laser short pulse simulation and two-mode sideband analysis. Naval Postgraduate School, 1991.

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Lu, Yen. A signal simulation model of pulsed doppler ultrasound clutter from a static artery wall. National Library of Canada, 1994.

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1939-, Radebaugh Ray, Zimmerman James Edward 1923-, and National Institute of Standards and Technology (U.S.), eds. Analytical model for the refrigeration power of the orifice pulse tube refrigerator. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1991.

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United States. National Aeronautics and Space Administration., ed. Testing and performance analysis of a 650 Mbps QPPM modem for free-space laser communications. National Aeronautics and Space Administration, 1994.

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Campbell, Peter R. M. An ocean medium pulse propagation model based on linear systems theory and the WKB approximation. Naval Postgraduate School, 1989.

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Burin, Amy Diana. Bench test model of the human skull for testing the Variable Frequency Pulse Phase-Locked Loop Instrument. Naval Postgraduate School, 1996.

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J, Ewell J., Hinsdale L. W, McDonnell Douglas Astronautics Company--Houston Division., and United States. National Aeronautics and Space Administration., eds. Independent Orbiter assessment: Assessment of the backup flight system FMEA/CIL. McDonnell Douglas Astronautics Company, 1988.

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Book chapters on the topic "Pulsed mode"

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Gigler, Alexander, and Othmar Marti. "Pulsed Force Mode SFM." In Scanning Probe Microscopies Beyond Imaging. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527608516.ch8.

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Burghardt, B., W. Mückenheim, and D. Basting. "Single-Mode Operation of Pulsed Dye Lasers." In Laser Spectroscopy VIII. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-540-47973-4_137.

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Kreisl, P., J. Schalwig, A. Friedberger, and G. Müller. "Hydrocarbon Detection using MOS Capacitors in a Temperature-Pulsed Mode." In Transducers ’01 Eurosensors XV. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59497-7_410.

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Basov, Nikolay G., Anatoly S. Bashkin, Valery I. Igoshin, Anatoly N. Oraevsky, and Vladimir A. Shcheglov. "Kinetics and Numerical Analysis of Chain-Reaction Chemical Lasers (Pulsed Mode)." In Chemical Lasers. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-70961-6_3.

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Demeshko, Andrey, Sergey Shishlov, and Alexander Shishlov. "Rationale for the Pulsed Operation Mode Use of Ice Water Generator." In XV International Scientific Conference “INTERAGROMASH 2022”. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21432-5_282.

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Soppera, Olivier, Ali Dirani, Safi Jradi, Vincent Roucoules, and Hamidou Haidara. "Investigation of Nanopatterned Functional Polymer Surfaces by AFM in Pulsed Force Mode." In Scanning Probe Microscopy in Nanoscience and Nanotechnology 3. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25414-7_11.

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Chiu, P. H., P. Pax, and R. Aubert. "Compression of the High Energy Pulsed Mode-Locked Nd:YLF and Nd:YAG Lasers." In Ultrafast Phenomena VI. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83644-2_13.

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Steiger, A., K. Grützmacher, and M. I. de la Rosa. "Efficient Generation of Pulsed Single-Mode Radiation Tunable in the UV-C Region." In Laser in Forschung und Technik / Laser in Research and Engineering. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80263-8_68.

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Hild, S., U. Krotil, and O. Marti. "Pulsed Force Mode: A new method for characterizing thin silane films by adhesive force measurements." In Tribology Issues and Opportunities in MEMS. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5050-7_18.

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Nouri, Soraya. "Diagnosis of Total Anomalous Pulmonary Venous Return with Combined Pulsed Doppler, M-Mode, and Two-Dimensional Echocardiography." In Pediatric Cardiology. Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4613-8598-1_48.

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Conference papers on the topic "Pulsed mode"

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Bingham, Samuel P., Daniel Matyas, Mark Mihalik, et al. "Output pulse energy from pulsed single-mode fiber amplifiers." In Fiber Lasers XXII: Technology and Systems, edited by Thomas Schreiber and Matthias Savage-Leuchs. SPIE, 2025. https://doi.org/10.1117/12.3038763.

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Chepusov, A. S., A. A. Komarskiy, S. R. Korzhenevskiy, and O. D. Krasniy. "Study of field electron emission properties of commercial graphite cathodes in pulse-repetitive mode." In VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0007.

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The article considers field emission cathodes from industrial graphites MG, MPG-7, and GMZ operated in the pulse-periodic mode with the pulse repetitionrate of 1 to 30 Hz. The operation of field emitters in the pulsed mode differs from operation at a constant voltage. Under stabilization of the high potential level, the amplitude of the pulses of the emission current decreases that leads to increasing the operating voltage in the pulsed mode. During operation of the graphite cathode (when the pulse current is recorded), the operating voltage at the anode stabilizes and oscillates within 5%. Operation in the direct current mode under similar conditions is accompanied by a change in the voltage value by more than 10 %.
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Lorenz, Dominik, Clément Romano, Dieter Panitzek, et al. "High-average-power single-mode pulsed Ho3+ and Tm3+- doped polarization-maintaining silica all-fiber MOPA." In Advanced Solid State Lasers. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/assl.2023.aw4a.4.

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Yuryshev, Nikolai N., and Nikolai P. Vagin. "Pulsed mode of COIL." In International Symposium on High-Power Laser Ablation 2002, edited by Claude R. Phipps. SPIE, 2002. http://dx.doi.org/10.1117/12.482123.

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Fischer, B., B. Vodonos, S. Atkins, and A. Bekker. "Dispersion-mode pulsed laser." 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.2000.906751.

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Slusher, Richard E., B. Yurke, P. Grangier, A. La Porta, and M. J. Potasek. "Pulsed squeezed light." In OSA Annual Meeting. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.mq8.

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The degree of squeezing generated by parametric downconversion or four-wave mixing can be limited by the ratio of the nonlinear coupling to the linear losses in many practical systems. This ratio can be enhanced by increasing the pump power used for the nonlinear coupling in many solid nonlinear systems where the linear losses are not directly related to the nonlinear squeezing process. Pulsed pump sources are attractive for optimizing the nonlinear coupling-to-loss ratio. We have shown1 that homodyne detection can be used to detect the pulsed squeezing generated by a mode-locked pulse train from the pump laser. A portion of the pump beam is used as the local oscillator which stroboscopically samples portions of the squeezed light pulse train. The amount of squeezing which can be measured as a function of the relative durations of the pump and local oscillator pulses is shown. Progress of recent experiments using both four-wave mixing and parametric downconversion is described.
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Bente, Erwin, Martijn Heck, Pascual Munoz, Amandine Renault, Richard Notzel, and Meint Smit. "Fast pulsed mode-locked lasers." In 2008 Joint Conference of the Opto-Electronics and Communications Conference (OECC) and the Australian Conference on Optical Fibre Technology (ACOFT). IEEE, 2008. http://dx.doi.org/10.1109/oeccacoft.2008.4610634.

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Danailov, M., G. Cerullo, V. Magni, et al. "Nonlinear mirror mode-locking of cw Nd lasers." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cmj1.

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In the last few years there has been an increasing interest in the development of mode-locking (ML) techniques for CW solid-state lasers based on saturable absorber-like action of fast nonlinearities.1 Using additive pulse ML, nonlinear Fabry–Perot interferometer ML, and Kerrlens ML, nearly bandwidth-limited pulses have been generated with Nd: YAG and Nd:YLF in CW lamp and diode-pumped lasers.2 A very attractive technique for passive ML, which can provide high nonlinear loss modulations, is the so-called "nonlinear mirror" ML.3,4 Up to now, however, this method has only been applied to pulsed systems.
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Piche, Michel. "Instabilities Of Actively Mode-Locked Homogeneously Broadened Lasers Induced By Self-Phase Modulation." In Instabilities and Dynamics of Lasers and Nonlinear Optical Systems. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/idlnos.1985.wd5.

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Phase-locking of a multimode laser results in the emission of a train of short pulses of constant shape1. This can be achieved by modulating the cavity losses at a frequency matched to the transit time in the resonator. The short pulse circulating in a pulsed laser can be compressed2 by inserting a Kerr medium in the laser cavity, provided self-phase modulation in the Kerr medium is properly adjusted to the dispersion of the gain medium. Self-phase modulation is also known1 to degrade the short pulse shape in several mode-locked solid state lasers.
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McGrane, P. "Mode selectivity in one-dimensional co-axial Bragg structures for a high power free electron maser." In Pulsed Power Seminar. IEE, 2003. http://dx.doi.org/10.1049/ic:20030097.

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Reports on the topic "Pulsed mode"

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Yamamoto Junji, D. J. Massoletti, D. W. Heikkinen, and Kenji Sumita. Operation in pulsed mode at RTNS-II. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6380914.

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Dr. Anatoly Shteynberg, PhD. Sliding Mode Pulsed Averaging IC Drivers for High Brightness Light Emitting Diodes. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/889754.

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Lambrakos, S. G., and A. Shabaev. Temperature Histories of Ti-6Al-4V Pulsed-Mode Laser Welds Calculated Using Multiple Constraints. Defense Technical Information Center, 2015. http://dx.doi.org/10.21236/ada625867.

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Smith, G. V., and B. E. Lewis. Design of a pulsed-mode fluidic pump using a venturi-like reverse flow diverter. [With no packing glands, mechanical seals or moving parts]. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6806996.

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Alton, G. D. (Evaluation of the high intensity plasma sputer negative ion source and to test the response of the University of Tsukuba 13-MV tandem accelerator to mA intensity level pulsed mode heavy negative ion beams). Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/5652338.

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Chen, Kun-Mu, Dennis P. Nyquist, and Edward J. Rothwell. Radar Target Discrimination and Identification Using Extinction-Pulses and Single-Mode Extraction Pulses. Defense Technical Information Center, 1991. http://dx.doi.org/10.21236/ada232162.

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Kotlyar, O. (Working model of new turbine pulser). Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/5868351.

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Dawson, J., M. Messerly, and J. An. Fiber Laser Replacement for Short Pulse Ti:Sapphire Oscillators -- Scalable Mode Locking to Record Pulse Energies. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/889996.

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Williams, James H., Nagem Jr., Yeung Raymond J., and Hubert K. Comparison of Wave-Mode Coordinate and Pulse Summation Methods. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada177795.

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Nichols, Daniel Marc, and Troy Unruh. Pulse Mode Calibration of the Micro Pocket Fission Detector. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1547331.

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