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Artykuły w czasopismach na temat „High pulsed power systems”

Autor: Grafiati

Data publikacji: 7 września 2024

Data aktualizacji: 31 lipca 2025

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1

Chvykov, Vladimir. "High-Power Lasers." Encyclopedia 4, no. 3 (2024): 1236–49. http://dx.doi.org/10.3390/encyclopedia4030080.

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High-power lasers play an important role in modern science, industry, and medicine. A significant milestone was reached on 5 December 2022, when Inertial Confinement Nuclear Fusion (ICF) achieved scientific breakeven, releasing more energy than the input laser energy. Additionally, Extreme Ultraviolet Lithography (EUVL) has enabled the development of microchips with 3 nm process nodes, marking a leap in semiconductor technology. These examples, together with the recent achievement of 10 PW (1015 W) laser output, herald remarkable advancements in technology and science. Laser systems are broadl

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Hongchao Hui, Hongchao Hui, Junyong Zhang Junyong Zhang, Xinghua Lu Xinghua Lu, et al. "Simulation study of broadband long-pulsed amplification in high-power laser systems." Chinese Optics Letters 14, no. 3 (2016): 031405–31408. http://dx.doi.org/10.3788/col201614.031405.

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Smirnov, Alexander, Evgeny Ivanov, Alexei Pronikov, and Sergey Kutsaev. "High-Voltage Pulsed Power Generator for Beam Injection Systems." Electronics 14, no. 3 (2025): 535. https://doi.org/10.3390/electronics14030535.

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Beam injection systems in hadron colliders require kickers generating ±50 kV peak voltages into a 50 Ω impedance, with peak currents of 1000 A and sub-10 ns rise and fall times. This paper presents a novel high-voltage pulse power generator utilizing a distributed pulser architecture. It combines gallium nitride (GaN) transistors in a Marx topology with an inductive adder, achieving nanosecond-scale switching speeds and high-power efficiency. Compared to other solutions such as based on MOSFETs or fast ionization dynistors, our development offers superior peak and average power performance, re

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4

Chen, Fu-Zen, Yu-Cheng Song, and Fu-Shun Ho. "An Efficiency Improvement Driver for Master Oscillator Power Amplifier Pulsed Laser Systems." Processes 10, no. 6 (2022): 1197. http://dx.doi.org/10.3390/pr10061197.

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The master oscillator power amplifier (MOPA) pulsed laser, one of the popular topologies for high-power fiber laser systems, is widely applied in industrial machining laser systems. In MOPA, the low-power pulsed laser, stimulated from a seed laser diode, is amplified by the high- power optical energy from pump laser diodes via the gain fiber. Generally, the high-power pump laser diodes are driven by lossy linear current drivers. The switched mode current drivers boost the driver efficiency but suffer from pulse energy consistency due to the current switching ripple. In this paper, a laser driv

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5

Dong, Weigang, Lei Chen, Jian Qiu, Haozheng Shi, Hui Zhao, and Kefu Liu. "The Cascade of High-Voltage Pulsed Current Sources." Electronics 13, no. 5 (2024): 924. http://dx.doi.org/10.3390/electronics13050924.

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Currently, pulsed adders are used as pulsed voltage sources maturely. However, their use as pulsed current sources is significantly limited due to circuit impedance and the characteristics of power devices. This paper presents a simple yet effective design for a pulsed current source, incorporating a solid-state Marx pulsed adder as the primary power source and an inductor for energy storage. In the pulsed current source, a Marx pulsed adder produces high voltage to charge the inductor. Then, the stored inductance energy is converted to generate current pulses on the load; the amplitude of the

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6

Priputnev P. V., Romanchenko I. V., and Rostov V. V. "Systems and technologies based on nonlinear transmission lines with ferrite (Review)." Technical Physics 68, no. 5 (2023): 555. http://dx.doi.org/10.21883/tp.2023.05.56060.230-22.

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Nonlinear transmission lines with ferrite have been actively developed and studied for about two decades. At the same time, the first works on this topic date back to the middle of the last century. Nonlinear transmission lines with ferrite find their application in various problems of electrophysics, with the greatest application being found in the problems of pulse sharpening, as delay lines and generators of high-power pulses of microwave radiation. The main scientific and technical results of the development of technologies of nonlinear transmission lines with ferrite are presented in chro

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7

Rung, Stefan, Niklas Häcker, and Ralf Hellmann. "Thermal imaging of high power ultrashort pulse laser ablation of alumina towards temperature optimized micro machining strategies." IOP Conference Series: Materials Science and Engineering 1135, no. 1 (2021): 012027. http://dx.doi.org/10.1088/1757-899x/1135/1/012027.

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Abstract The application of pulsed laser systems with pulse durations in the pico- and femtosecond regime for material processing is commonly associated with a cold ablation. Due to the minimized interaction-time between the ultrashort laser pulses and the material, this statement is almost valid as long as no heat accumulation effect appears. With the increasing demand of high productivity processes, the average power of ultrashort pulsed laser systems increases above 100 W, which leads, however, to increased thermal effects during laser processing. This is especially important for laser proc

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8

Li, Hongda, Bo Zhang, Sergey Sosnovskiy, et al. "Study of Bipolar Inductively Isolated High-Voltage Pulse Source." Electronics 12, no. 18 (2023): 3864. http://dx.doi.org/10.3390/electronics12183864.

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To meet the application requirements of pulsed power technology in wastewater treatment and other aspects (for example, a scenario that requires a high-voltage pulse source that can output a pulse with a rising edge in the nanosecond range and a device that can stabilize the pulse under high-frequency conditions), this paper designed an inductively isolated bipolar high-voltage pulse source. It consists of three parts: the primary charging power supply, the isolated driver circuit, and the pulse-forming circuit. By using inductance instead of traditional resistance isolation, using the inducta

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9

Singh, S. K., J. H. Murphy, P. W. Eckels, C. J. Mole, A. T. Male, and C. K. Jones. "Impact of high temperature superconductors on pulsed power systems." IEEE Transactions on Magnetics 25, no. 2 (1989): 1787–90. http://dx.doi.org/10.1109/20.92648.

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10

Zhang, Zhonglin, Liang Xie, Zhengwu Liu та ін. "Nonlinear Optical Response of Tungsten Carbide Thin Film as Saturable Absorber at 1 μm and Its Application for Passively Q-Switched Nd:YAG Lasers". Nanomaterials 15, № 8 (2025): 605. https://doi.org/10.3390/nano15080605.

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Pulsed lasers have a wide range of applications in scientific and industrial fields, and the saturable absorber (SA) is the core device of pulsed lasers. Tungsten carbide (WC) has garnered significant attention due to its exceptional physicochemical properties, making it a promising candidate for optoelectronic applications, particularly as an SA in pulse lasers. This study is the first to report the nonlinear optical properties of WC thin film at a 1064 nm wavelength and its use as an SA device to generate pulsed lasers. A high damage threshold of 472.4 mJ/cm2 was achieved, which is a critica

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11

OGUNNIYI, ADERINTO, and HEATHER O'BRIEN. "PULSE EVALUATION AND RELIABILITY ANALYSIS OF 4H-SiC SGTO MODULES." International Journal of High Speed Electronics and Systems 20, no. 03 (2011): 441–55. http://dx.doi.org/10.1142/s0129156411006738.

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Army applications require power components that are utilized in pulsed power systems to be reliable and durable, compact, have high power and energy density, and lastly, to be easily integrated into combat vehicles. The U.S. Army Research Laboratory (ARL) is currently investigating silicon carbide Super-gate turn-off thyristors ( SiC SGTOs) to meet the future pulsed power system requirements for the Army. ARL's methodology is to evaluate the device performance in pulsed power circuits that emulate the electrical stresses that the power devices would encounter in a pulsed power system. Each mod

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12

Jackel, S., M. Givon, A. Ludmirsky, et al. "Multiple-pass amplifiers for high-power laser systems." Laser and Particle Beams 5, no. 1 (1987): 115–24. http://dx.doi.org/10.1017/s0263034600002536.

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Multiple-pass amplifiers were configured from Nd:glass rods using polarization and angular coupling techniques. Very high gain (>600) single beam triple-pass booster stages and high gain (30 or 15) single or double-beam double-pass amplifiers were combined to construct a very cost effective high-power (50 GW) pulsed laser system. These techniques were also effectively applied to smaller compact high repetition-rate systems.

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13

Butkus, Paulius, Sonata Tolvaišienė, and Sebastjanas Kurčevskis. "Validation of a SPICE Model for High Frequency Electroporation Systems." Electronics 8, no. 6 (2019): 710. http://dx.doi.org/10.3390/electronics8060710.

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In this paper, we present an analysis and a validation of a simulation program with integrated circuit emphasis (SPICE) model for a pulse forming circuit of a high frequency electroporation system, which can deliver square-wave sub-microsecond (100–900 ns) electric field pulses. The developed SPICE model is suggested for use in evaluation of transient processes that occur due to high frequency operations in prototype systems. A controlled crowbar circuit was implemented to support a variety of biological loads and to ensure a constant electric pulse rise and fall time during electroporation to

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14

Zhang, Keran, Yun Hao, Shu Zhang, Yangtao Fan, and Xiangyong He. "HEMP Protection of Power Systems in Electromagnetic Shielding Cabinet." Journal of Physics: Conference Series 2615, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1742-6596/2615/1/012018.

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Abstract High-altitude Electromagnetic Pulse (HEMP) has a significant impact on power systems. This paper simulates the HEMP coupling for three types of power cables in an electromagnetic shielding cabinet. Besides, this paper proposes the HEMP protection circuit design for 220 V AC and 24 V DC power. In a lightning conduction injection test, the circuit reduces the peak voltage by 12.1 and 14.2 times for AC and DC, respectively. In a pulsed current injection (PCI) test, the circuit reduces the transient peak current to less than 8.2 A for both AC and DC.

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15

Susoeff, A. R., R. S. Hawke, and K. S. Leighton. "A mechanical connector design for high-current, high-Coulomb pulsed power systems." IEEE Transactions on Magnetics 29, no. 1 (1993): 1070–75. http://dx.doi.org/10.1109/20.195729.

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16

Godun, D. V., S. V. Bordusau, and G. P. Budzko. "Output Current Control System of a High Voltage Electric Pulse Generator for Plasma Excitation." PLASMA PHYSICS AND TECHNOLOGY 6, no. 1 (2019): 7–9. http://dx.doi.org/10.14311/ppt.2019.1.7.

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A control and pulse discharge current limiting system integrated into an AC/DC converter and pulse modulator of a high voltage pulse generator have been developed. The peculiarity of such system\textquotesingle s operation is the stabilization of the power supplied to the discharge and the correction of the width of output electric pulses towards decrease upon reaching the specified pulsed current amplitude value. The system enables the pulse generator to work in the modes close to the ``short circuited load'' mode. In this case the driving module of a composite IGBT key performs the correctio

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17

Aladov, A. V., A. E. Chernyakov, A. E. Ivanov, and A. L. Zakgeim. "Study of power limitation of AlGaInN LEDs in pulse regime at high current." Journal of Physics: Conference Series 2103, no. 1 (2021): 012186. http://dx.doi.org/10.1088/1742-6596/2103/1/012186.

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Abstract LEDs operating under high pulsed current are of a great interest for different applications, in particular, for VLC (LiFi) systems and laser pumping. Current dependences of the efficiency and emission spectra as well as the rise and fall times of high-power blue LEDs were investigated under extremely high pulse current density up to 7 kA/cm2 and pulse duration from 100 ns to 3 μs. Analysis of the pulse behaviour of the LEDs reveals that the main droop in the efficiency and change in spectra occur up to the current densities ~ 1 kA/cm2 and seems to be non-thermal.

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18

Radhika, G., K. Sashidhar, P. Aravinda Sai Krishna, and C. Avaneesh. "Flexible output pattern high-power pulse generator." E3S Web of Conferences 472 (2024): 01016. http://dx.doi.org/10.1051/e3sconf/202447201016.

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Day by day, the need for renewable fuel has increased to reduce the usage of non-renewable fuels and also to provide adequate fuel for vehicle use worldwide. Organic fuels that can be derived from different sources are renewable fuels, of which oil extracted from algae cells can also be used as a biofuel. Algae oil extraction can be achieved by applying a Pulsed Electric Field across the algae cell to rupture its membrane and to remove oil. A Pulse Generator, capable of carrying out this operation, although in existence, has some drawbacks including lack of versatility, performance and reliabi

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19

Grover, Harpreet Singh, and Francis Dawson. "Minimizing Late Currents in Pulsed Power Gas Laser Systems." IEEE Transactions on Plasma Science 49, no. 9 (2021): 2946–53. http://dx.doi.org/10.1109/tps.2021.3098759.

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20

Krymsky, Valerii, Nataliya Shaburova, and Ekaterina Litvinova. "Analysis of the Results of Pulsed Processing of Melts." Metals 10, no. 2 (2020): 205. http://dx.doi.org/10.3390/met10020205.

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The paper presents the results of a relatively new method of external action on melts developed by the authors. The essence of the technology is the impact on melts before casting with electromagnetic pulses (EMP) of short duration (1 ns) and with high pulse power (2 kW). To create electromagnetic pulses, a generator with the following characteristics was used: pulse amplitude of 10 kV, the leading edge of the pulse was 0.1 ns, pulse duration of 1 ns, pulse repetition rate at 1 kHz, and a calculated pulse power of 2 MW. A distinctive feature of the generator used was its low power consumption

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21

Wu, Da Yong, and Sheng Bao Yu. "Research and Implementation of the Triangular Wave Pulse Power Device." Applied Mechanics and Materials 241-244 (December 2012): 657–60. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.657.

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The pulsed power is an important part of the airborne geophysical method detection systems. However, the traditional method of aerial transient electromagnetic transmitted waveform will cause the interference which is not conducive to process the post-data. The paper presents a new kind of dual polarity triangle pulse power device. The experimental results verify the correctness of theoretical analysis by using constant voltage clamping method to achieve emission of the isosceles triangular current pulse. Its falling edge of high linearity, high reliability, the output characteristics of a goo

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22

Kondratenko, I. P., A. N. Karlov, and R. S. Kryshchuk. "CONTROL STRATEGIES TO ELIMINATE HARMONICS IN POWER GENERATION SYSTEMS BASED ON A DOUBLY-FED INDUCTION GENERATOR." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini, no. 61 (May 25, 2022): 5–12. http://dx.doi.org/10.15407/publishing2022.61.005.

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The action of high-density pulsed currents (109 A/m2) leads to the appearance of the electro-plastic effect in metal products. It is proposed to use magnetic pulse treatment of nonmagnetic plates by electromagnetic inductors with a U-shaped magnetic circuit for local flow pulsed currents in the nonmagnetic plates. The work aims to establish an influence of a ferromagnetic platform with nonlinear magnetic permeability on pulsed eddy currents and magnetic pressure of nonmagnetic metal plates with different electrical conductivity in modeling magnetic pulse treatment of welded joints to achieve t

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23

Kim, A. A., B. M. Kovalchuk, V. A. Kokshenev, et al. "Review of high-power pulsed systems at the Institute of High Current Electronics." Matter and Radiation at Extremes 1, no. 4 (2016): 201–6. http://dx.doi.org/10.1016/j.mre.2016.08.001.

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24

Jian Yun, Jian Yun, Cunxiao Gao Cunxiao Gao, Shaolan Zhu Shaolan Zhu, et al. "High-peak-power, single-mode, nanosecond pulsed, all-fiber laser for high resolution 3D imaging LIDAR system." Chinese Optics Letters 10, no. 12 (2012): 121402–4. http://dx.doi.org/10.3788/col201210.121402.

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Chvykov, Vladimir. "Ti:Sa Crystals in Ultra-High Peak and Average Power Laser Systems." Crystals 11, no. 7 (2021): 841. http://dx.doi.org/10.3390/cryst11070841.

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In this paper, Ti:Sa amplifiers with crystals of the different geometries are discussed. Benefits of using this active medium for a thin disk (TD) and slab amplifiers are evaluated numerically and tested experimentally. Thermal management for amplifiers with multi-kW average power and multi-J pulse energy has been demonstrated. The presented numerical simulations revealed the existing limitations for heat extraction in TD geometry in the sub-joule energy regime for higher repetition rate operation. Geometry conversion from TD to thin-slab (TS) and cross-thin-slab (XTS) configurations significa

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26

Tikhomirov, S. A. "Femtosecond System with Pulse Pumping of Seed Laser and Amplifier by Using a Single Power Unit." Devices and Methods of Measurements 12, no. 1 (2021): 23–29. http://dx.doi.org/10.21122/2220-9506-2021-12-1-23-29.

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For several decades development of methods for generating ultrashort pulses has been an independent urgent scientific and technical problem. There is a constant improvement both in the methods of such pulses receiving and in methods of their use. The aim of this work was to investigate the possibility of realizing the coordinated operation of two fundamentally different types of pump lasers for the femtosecond oscillator and amplifier based on one single-lamp laser head and to create on this basis a compact high-power femtosecond system with pulsed pumping and one power unit.The practical impl

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27

Li, Li, Lin Li, Huiwu Xu, et al. "Designing a 1550 nm Pulsed Semiconductor Laser-Emission Module Based on a Multiquantum-Well Equivalent Circuit Model." Electronics 12, no. 7 (2023): 1578. http://dx.doi.org/10.3390/electronics12071578.

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The demand for eye-safe 1550 nm pulsed semiconductor laser-emission modules is increasing in the field of active laser detection, owing to their long range and high precision. The high power and narrow pulse of these modules can significantly improve the distance and accuracy of active-laser detection. Here, we propose an equivalent circuit model of a multiquantum-well laser based on the structure of a laser device. We developed a design method for 1550 nm pulsed semiconductor laser-emission modules according to the equivalent circuit model of an InGaAlAs laser. In this method, the module desi

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Żbik, Mateusz, and Piotr Wieczorek. "Charge-Line Dual-FET High-Repetition-Rate Pulsed Laser Driver." Applied Sciences 9, no. 7 (2019): 1289. http://dx.doi.org/10.3390/app9071289.

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Most modern pulsed laser systems require versatile laser diode drivers. A state-of-the-art pulsed laser driver should provide precise peak power regulation, high repetition rate, and pulse duration control. A new, charge line dual-FET transistor circuit structure was developed to provide all these features. The pulsed modulation current is adjustable up to Imax = 1.2 A, with the laser diode forward voltage acceptable up to UF max = 20 V. The maximum repetition rate is limited by a charge line circuit to frep max = 20 MHz. Compared to the conventional single transistor drivers, the solution pro

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Prud’homme, Alberto, and Frederic Nabki. "Cost-Effective Photoacoustic Imaging Using High-Power Light-Emitting Diodes Driven by an Avalanche Oscillator." Sensors 25, no. 6 (2025): 1643. https://doi.org/10.3390/s25061643.

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Photoacoustic imaging (PAI) is an emerging modality that merges optical and ultrasound imaging to provide high-resolution and functional insights into biological tissues. This technique leverages the photoacoustic effect, where tissue absorbs pulsed laser light, generating acoustic waves that are captured to reconstruct images. While lasers have traditionally been the light source for PAI, their high cost and complexity drive interest towards alternative sources like light-emitting diodes (LEDs). This study evaluates the feasibility of using an avalanche oscillator to drive high-power LEDs in

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Singh, Ranbir. "HIGH POWER SIC PIN RECTIFIERS." International Journal of High Speed Electronics and Systems 15, no. 04 (2005): 867–98. http://dx.doi.org/10.1142/s0129156405003442.

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High voltage PiN rectifiers made using conventional semiconductor materials such as Silicon are restricted to less than 20 kHz and less 120°C operation, thereby severely limiting the availability of advanced electronic hardware used for power grid (also called electric utility), energy storage, pulsed power, intelligent machinery and ultra high voltage solid state power conditioning. Such applications require high power density, very high frequency, and high temperature rectifiers to realize reasonably sized systems. SiC PiN Rectifiers are expected to play an enabling role in a variety of such

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31

Schille, Joerg, Sebastian Kraft, Theo Pflug, et al. "Study on X-ray Emission Using Ultrashort Pulsed Lasers in Materials Processing." Materials 14, no. 16 (2021): 4537. http://dx.doi.org/10.3390/ma14164537.

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The interaction of ultrashort pulsed laser radiation with intensities of 1013 W cm−2 and above with materials often results in an unexpected high X-ray photon flux. It has been shown so far, on the one hand, that X-ray photon emissions increase proportionally with higher laser power and the accumulated X-ray dose rates can cause serious health risks for the laser operators. On the other hand, there is clear evidence that little variations of the operational conditions can considerably affect the spectral X-ray photon flux and X-ray emissions dose. In order to enhance the knowledge in this fiel

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Majernik, Nathan, Walter Lynn, Yusuke Sakai, and James Rosenzweig. "Plasma Deflection Interrupter for Pulsed Power Applications." Instruments 2, no. 3 (2018): 14. http://dx.doi.org/10.3390/instruments2030014.

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A plasma-based opening switch, capable of handling kiloampere currents at kilovolt potentials on the microsecond timescale, is described and characterized. The principle of operation is the deflection of a laser-induced arc by an external magnetic field to a shunt circuit path. A first-order model of operation is introduced. Finally, the merits of the device, particularly when applied to high-repetition-rate dense plasma focus (DPF) systems, are discussed.

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Anagha, A. P., and K. Sunitha. "Influence of Field Spacer Geometry on the Performance of a High Voltage Coaxial Type Transmission Line with Solid Dielectric Spacer in Vacuum." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1605–10. http://dx.doi.org/10.48084/etasr.1188.

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With the development of more powerful high power electromagnetic sources, the transmission of high voltage power particularly between pulsed power systems to huge power rated microwave sources in absence of electrical breakdown and pulse distortion has begun to become a vital issue. A high voltage coaxial type transmission line with 500 kV peak voltage in vacuum is proposed. A novel proposal of configuration bearing a positive angle of 45o with socket-type filed shaper is being discussed in this paper in a manner to improve surface flashover properties and also to decrease the distortion seen

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Anagha, A. P., and K. Sunitha. "Influence of Field Spacer Geometry on the Performance of a High Voltage Coaxial Type Transmission Line with Solid Dielectric Spacer in Vacuum." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1605–10. https://doi.org/10.5281/zenodo.809230.

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With the development of more powerful high power electromagnetic sources, the transmission of high voltage power particularly between pulsed power systems to huge power rated microwave sources in absence of electrical breakdown and pulse distortion has begun to become a vital issue. A high voltage coaxial type transmission line with 500 kV peak voltage in vacuum is proposed. A novel proposal of configuration bearing a positive angle of 45o with socket-type filed shaper is being discussed in this paper in a manner to improve surface flashover properties and also to decrease the distortion seen

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35

Guo, Huaixin, Tangsheng Chen, and Shang Shi. "Transient Simulation for the Thermal Design Optimization of Pulse Operated AlGaN/GaN HEMTs." Micromachines 11, no. 1 (2020): 76. http://dx.doi.org/10.3390/mi11010076.

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The thermal management and channel temperature evaluation of GaN power amplifiers are indispensable issues in engineering field. The transient thermal characteristics of pulse operated AlGaN/GaN high electron mobility transistors (HEMT) used in high power amplifiers are systematically investigated by using three-dimensional simulation with the finite element method. To improve the calculation accuracy, the nonlinear thermal conductivities and near-junction region of GaN chip are considered and treated appropriately in our numerical analysis. The periodic transient pulses temperature and temper

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Fu, Zebin, Fanzheng Zeng, Yifeng Liu, Chenglin Jia, and Song Li. "Investigation of the Opposite-Electrode Effect on the Planar Solid-State Pulse-Forming Line." Applied Sciences 14, no. 19 (2024): 8677. http://dx.doi.org/10.3390/app14198677.

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The planar solid-state pulse-forming line (planar solid-state PFL) is an important solid-state device used in compact pulse power systems. Moreover, pulsed power systems constitute a crucial element within electroporation systems. In this paper, we present theoretical and simulation analyses of the influence of the ground electrode structure of the planar solid-state PFL on the edge electric field and thermal distribution of high-voltage electrodes and the design of a novel improved solid-state PFL (opposite-electrode PFL) that differs from the classic planar solid-state PFL (full-electrode PF

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DÖRR, M., D. ECKERT, H. ESCHRIG, et al. "THE DRESDEN 100 T/10 ms PROJECT: A HIGH MAGNETIC FIELD FACILITY AT AN IR-FEL." International Journal of Modern Physics B 16, no. 20n22 (2002): 3397. http://dx.doi.org/10.1142/s0217979202014541.

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We have proposed to build a 100 T/10 ms, 70 T/100 ms, 60 T/1 s pulsed field user facility with a 50 MJ capacitor bank at the Forschungszentrum Rossendorf near Dresden. This would provide the appealing possibility to have access to Zeeman energies in the energy range of the infrared free-electron-lasers (5 μm to 150 μm; 2 ps; cw; > 10 W) now under construction at the radiation source ELBE (superconducting electron linear accelerator; 40 MeV; 1 mA; 2 ps; cw) in Rossendorf. The work is accompanied by computer simulations of the planned coil systems, of the power supply, and by the development

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Coroado, Julio, Supriyo Ganguly, Wojciech Suder, Stewart Williams, Sonia Meco, and Goncalo Pardal. "Selection of parameters in nanosecond pulsed wave laser micro-welding." International Journal of Advanced Manufacturing Technology 115, no. 9-10 (2021): 2929–44. http://dx.doi.org/10.1007/s00170-021-07251-8.

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AbstractThe digital control of the latest nanosecond pulsed wave (PW) fibre lasers allows very high flexibility in controlling the application of the total energy to a workpiece, which brings several advantages to the joining process. By choosing different pulse shapes in different spatial profiles, it is possible to apply low energy per pulse with high precision and accuracy resulting in lower heat input. Since the energy of each pulse is insufficient to generate melting, these lasers operate at very high pulse repetition frequencies near continuous wave (CW) regime. Nevertheless, the peak po

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Moffett, Mark B., David L. Chesny, Jake M. Cole, Kaleb W. Hatfield, and Razvan Rusovici. "Bdot probe and Rogowski coil cross-calibration and sensor fusion in pulsed direct current capacitor discharges." Review of Scientific Instruments 93, no. 3 (2022): 034707. http://dx.doi.org/10.1063/5.0076741.

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Bdot probes and Rogowski coils are used in the measurement of transient magnetic fields and currents, respectively. They both share the mechanism of creating an induced electromotive force response via Faraday’s law, which scales linearly with the pulsed magnetic field. High power capacitor direct current (DC) discharge systems release a single pulse of current that is both very high and very fast (≲1 ms). To capture these transient data and characterize these systems, high current tolerant and fast response time sensors are required. While these measuring devices have been well studied and ut

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Nagarajan, P., N. Ashok Kumar, and P. Venkat Ramana. "Design of implicit pulsed-dual edge triggering flip flop for low power and high speed clocking systems." International Journal of Wavelets, Multiresolution and Information Processing 18, no. 01 (2019): 1941009. http://dx.doi.org/10.1142/s0219691319410091.

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The flip-flops are considered as major contributors to the power dissipation of the clocking system, which is made up of the clock provision network and storage elements (latches, flip-flops). The power- and delay-efficient new implicit-pulsed dual-edge triggering flip-flop circuit (IP-DETFF) is proposed with two latching stages by employing an implicit-pulse triggering, dual-edge clocking and reducing the number of clocked loads. This leads to the reduction of power consumption due to clock allocation tree (pclk-tree) and reduces the delay time. The dual-edge clocking technique is incorporate

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Sumathy, P., J. Divya Navamani, A. Lavanya, Jagabar Sathik, R. Zahira, and Fadl A. Essa. "PV Powered High Voltage Pulse Converter with Switching Cells for Food Processing Application." Energies 16, no. 2 (2023): 1010. http://dx.doi.org/10.3390/en16021010.

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In recent years, industries in the suburb have retrofitted their power supply units with solar power supply systems. Using solar power supply systems for various applications, such as food processing, enables energy expense saving. A promising opportunity in the food industry is solar-powered Pulsed Electric Field (PEF) used in the treatment of fruits and their by-products. For this application, a converter is proposed in this paper with a combination of a passive switched inductor cell and a switched capacitor cell. Furthermore, the derived topology possesses an extendable feature. This topol

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Malviya, Devesh, and Mummadi Veerachary. "A Boost Converter-Based High-Voltage Pulsed-Power Supply." IEEE Transactions on Industry Applications 56, no. 5 (2020): 5222–33. http://dx.doi.org/10.1109/tia.2020.3007396.

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Korobkov, S. V., M. E. Gushchin, A. V. Strikovskiy, et al. "NONLINEAR PHENOMENA DURING THE PROPAGATION OF POWERFUL NANOSECOND ELECTROMAGNETIC PULSES IN A LARGE-SCALE STRIPE LINES WITH A GAS AT REDUCED PRESSURE." Доклады Российской академии наук. Физика, технические науки 510, no. 1 (2023): 16–21. http://dx.doi.org/10.31857/s2686740023030100.

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Experiments of propagation of the high-power high-voltage nanosecond and subnanosecond pulses in large-scale transmitting lines in various gases make it possible to solve a wide range of fundamental and applied problems, from simulating the propagation of electromagnetic pulses (EMP) through the atmosphere to estimating the electrical strength of elements of pulsed high-voltage gas-filled systems. At the IAP RAS, experiments with stripe lines up to 5 m in length are performed in Krot and Sprite devices. During the propagation of EMP with an electric field strength up to 100 kV/m in a low press

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Rajan, Rehim N., J. Mondal, A. R. Tillu, et al. "Analysis of energy stability in 6/4 MeV dual energy RF electron linac." Journal of Instrumentation 17, no. 10 (2022): P10022. http://dx.doi.org/10.1088/1748-0221/17/10/p10022.

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Abstract RF linear accelerators are used to produce high energy electron beams up to several MeV for various industrial, medical and research applications. Accelerators with switchable energy are increasingly finding application in non-destructive testing systems with material discrimination capability. These systems are based on pulsed accelerators with duration 3 to 10 micro second with repetition rate up to 400 Hz. Magnetrons are used as microwave source in relatively low power accelerator systems. This paper examines various factors affecting the pulse to pulse energy variation in such rad

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Gaida, Christian, Fabian Stutzki, Florian Jansen, et al. "Triple-clad large-pitch fibers for compact high-power pulsed fiber laser systems." Optics Letters 39, no. 2 (2014): 209. http://dx.doi.org/10.1364/ol.39.000209.

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May, M. J., T. Clancy, D. Fittinghoff, et al. "High bandwidth data recording systems for pulsed power and laser produced plasma experiments." Review of Scientific Instruments 77, no. 10 (2006): 10F504. http://dx.doi.org/10.1063/1.2219417.

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Hua Bai, Zhengming Zhao, and C. Mi. "Framework and Research Methodology of Short-Timescale Pulsed Power Phenomena in High-Voltage and High-Power Converters." IEEE Transactions on Industrial Electronics 56, no. 3 (2009): 805–16. http://dx.doi.org/10.1109/tie.2008.2004387.

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Fu, Chao, Wenrao Fang, Ruyu Fan, et al. "Design and Implementation of Low Parasitic Inductance Bias Circuit for High-Power Pulsed Power Amplifiers." Electronics 12, no. 6 (2023): 1430. http://dx.doi.org/10.3390/electronics12061430.

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This article presents a wideband bias circuit with low parasitic inductance for high-power pulsed amplifiers. The proposed bias circuit works similarly to the traditional bias circuit in that it can ensure the transmission of microwaves from the power amplifier to the load while preventing the transmission of microwaves from the power amplifier to the power supply. By making the bias line shorter and the transmission line wider than the traditional bias circuit, the proposed bias circuit reduces its parasitic inductance. The reduction of parasitic parameters is critical for reducing the drain

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Zong, Jiawei, Yating Shi, Guang Qian, et al. "Performance Enhancement of Planar GaAs Photoconductive Semiconductor Switches by Introducing p-Type Epitaxial Layer." Photonics 12, no. 2 (2025): 152. https://doi.org/10.3390/photonics12020152.

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Gallium arsenide photoconductive semiconductor switches (GaAs PCSSs) have attracted much attention in pulsed power systems and high-power microwave sources. The quality of ohmic contact has a significant impact on their switching performance. In this article, a 100 nm p-type epitaxial layer and Ti/Pt/Au metal electrodes were introduced into a GaAs PCSS to enhance ohmic contact, resulting in a specific contact resistivity of 3 × 10−4 Ω·cm2. The optimized device exhibited a reduction in dark current from 32.2 μA to 11.7 μA and achieved a peak pulse output of 4 kV under a bias of 8.1 kV. This wor

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Eidam, Tino, Sven Breitkopf, Oliver Herrfurth, et al. "High-power ultrafast fiber lasers for materials processing." Advanced Optical Technologies 10, no. 4-5 (2021): 277–83. http://dx.doi.org/10.1515/aot-2021-0033.

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Abstract State-of-the-art fiber-laser systems can deliver femtosecond pulses at average powers beyond the kilowatt level and multi-mJ pulse energies by employing advanced large-mode-area fiber designs, chirped-pulse amplification, and the coherent combination of parallel fiber amplifiers. By using sophisticated coherent phase control, one or even several output ports can be modulated at virtually arbitrary power levels and switching speeds. In addition, an all-fiber setup for GHz-burst generation is described allowing to access an even wider range of laser parameters. The combination of all th

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