Results 261 to 270 of about 29,139 (290)

GaAs converter for high power laser diode

Conference Record of the Twenty Fifth IEEE Photovoltaic Specialists Conference - 1996, 1996
Transmission of electrical power in an optical form is of increasing interest. Many applications of this technique can have high conversion efficiency over 50%. An optical power transmission system consists of a laser (acting as a power source) and a photovoltaic device, eventually coupled by an optical fiber used as a waveguide.
A. Fave, A. Kaminski, M. Gavand, L. Mayet, A. Laugier   +4 more
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Space Laser Power Converter Prototype

2014
Ground prototype of wireless energy transfer (WET) system between spacecrafts was made. On basis of prototypes ground testing WET technology development space experiment is planned. WET system prototype consists of laser radiation source, off-axis beam forming system, guidance system and laser radiation converter with embedded power electronics and ...
Nikitina, T., Tugaenko, V., Zayats, O., Khvostikov, V.P.   +3 more
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Photovoltaic laser power converters for wireless optical power supply of sensor systems

2016 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE), 2016
Optical power transmission (also called power-by-light) is an elegant solution to power wireless sensor nodes. At the sensor, optical power in form of monochromatic laser light is converted to electricity by photovoltaic laser power converters. These photovoltaic cells are optimized for the monochromatic wavelength of the light — opposed to solar cells,
Henning Helmers, Andreas W. Bett
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High power laser diode driver based on power converter technology

IEEE Transactions on Power Electronics, 1997
This paper describes the design of a high speed semiconductor laser diode driver designed for driving 500 mW to 1.5 W diodes at full optical power modulation up to frequencies of 10 MHz. The duty cycle of the modulation may be varied. A switching power-converter based current source allows a higher power delivery efficiency to the diode than in ...
M.T. Thompson, M.F. Schlecht
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Efficiency limits of laser power converters for optical power transfer applications

Journal of Physics D: Applied Physics, 2013
We have developed III-V-based high-efficiency laser power converters (LPCs), optimized specifically for converting monochromatic laser radiation at the eye-safe wavelength of 1.55 m into electrical power. The applications of these photovoltaic cells include high-efficiency space-based and terrestrial laser power transfer and subsequent conversion to ...
Mukherjee, J, Jarvis, S, Sweeney, SJ, Perren, M   +3 more
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Four-junction AlGaAs/GaAs laser power converter

Journal of Semiconductors, 2018
Four-junction AlGaAs/GaAs laser power converters (LPCs) with n + -GaAs/p + -Al 0.37 Ga 0.63 As heterostructure tunnel junctions (TJs) have been designed and grown by metal-organic chemical vapor deposition (MOCVD) for converting the power of 808 nm lasers.
Jie Huang, Yurun Sun, Yongming Zhao, Shuzhen Yu, Jianrong Dong, Jiping Xue, Chi Xue, Jin Wang, Yunqing Lu, Yanwen Ding   +9 more
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Multi-segment photovoltaic laser power converters and their electrical losses

2017
33rd European Photovoltaic Solar Energy Conference and Exhibition; 5 ...
Kimovec, R., Helmers, H., Bett, A.W., Topic, M.   +3 more
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Optimal laser wavelength for efficient laser power converter operation over temperature

Applied Physics Letters, 2016
A temperature dependent modeling study is conducted on a GaAs laser power converter to identify the optimal incident laser wavelength for optical power transmission. Furthermore, the respective temperature dependent maximal conversion efficiencies in the radiative limit as well as in a practically achievable limit are presented.
O. Höhn, A. W. Walker, A. W. Bett, H. Helmers   +3 more
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Temperature Tweaking of the Output Photovoltaic Parameters of Laser Power Converters

IEEE Electron Device Letters, 2020
An option for the structural design of the metamorphic InGaAs photovoltaic converter is presented. The peculiarity of the proposed device is the ability to operate efficiently with the high-power 1064 nm laser radiation at the elevated up to +125°C temperatures.
M. Z. Shvarts, V. M. Emelyanov, D. A. Malevskiy, M. A. Mintairov, S. A. Mintairov, M. V. Nakhimovich, P. V. Pokrovskiy, R. A. Salii, N. A. Kalyuzhnyy   +8 more
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Application of Series Resonant Converters in Laser Power Supply

2010 International Conference on Electrical and Control Engineering, 2010
The series resonant converter is a kind of DC to DC converter. The paper introduces the principle of the half bridge series resonant converter and the application of the half bridge series resonant converter in laser power supply. The series resonant converter has the high converting frequency and its output waveform comes near to the sine wave.
openaire   +1 more source