&lt;title&gt;Power supply of the semiconductor laser with a voltage converter&lt;/title&gt;

Dlugaszek, Andrzej; Pichola, W.

doi:10.1117/12.203305

SPIE Proceedings

1995

DOI: 10.1117/12.203305

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<title>Power supply of the semiconductor laser with a voltage converter</title>

Andrzej Dlugaszek

W. Pichola

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“…This energy conversion system can be applied to the place where the electrical energy transmission is inconvenient or is not recommendable. It can take full advantage of not only the properties of fiber (such as electrical insulation and light weight), but also immunity from electro-magnetic, radio frequency (RF), and lightning interferences202122232425. Therefore, it provides an alternative method and also improves the safety of electricity energy transmission.…”

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Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter

Zhao

Sun

Sheng

et al. 2016

Sci Rep

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A six-volt vertically-stacked, high current GaAs photovoltaic power converter (PPC) has been designed and fabricated to produce output power over 1 W under monochromatic illumination. An N ++ -GaAs/ P ++ -AlGaAs tunnel junctions (TJs) structure has been used for connecting each sub-cell in this verticallystacked PPC device. The thickness of the each GaAs sub-cell has been derived based on the calculation of absorption depth of photons with a wavelength of 808 nm using absorption coefficient obtained from ellipsometry measurements. The devices were characterized under non-uniform CW laser illumination at 808 nm with incident power up to 4.1 W. A maximum conversion efficiency of 50.2% was achieved at 0.3 W under non-uniform (coupled in optical fiber) monochromatic illumination, dropping to 42.5% at 4.1 W. The operating voltage at the maximum power point is 5.5-6.0 V, depending on the incident laser power, and an output electrical power output of 1.3 W can be extracted at a laser power of 2.9 W and the maximum electrical power output amounts to 1.72 W. The external quantum efficiency (EQE) measurement indicates that the performance of PPC can be further improved by refining the design of the thickness of sub-cells and improving TJs.The conversion of monochromatic light into electrical power by photovoltaic power converters (PPCs) has attracted increasing attention [1][2][3][4][5][6][7][8][9][10][11][12] . This light energy conversion system contain a light source (generally, a laser is employed), a transmission medium (in most cases, an optical fiber) and a PPC [13][14][15][16][17][18][19] . Typical physical process of this technology includes following steps. First, the light energy is transmitted via transmission medium; then, the PPC receives light energy from the transmission medium and convert the optical energy into electrical energy. This energy conversion system can be applied to the place where the electrical energy transmission is inconvenient or is not recommendable. It can take full advantage of not only the properties of fiber (such as electrical insulation and light weight), but also immunity from electro-magnetic, radio frequency (RF), and lightning interferences [20][21][22][23][24][25] . Therefore, it provides an alternative method and also improves the safety of electricity energy transmission. This system can be applied to many fields, such as sensor, aerospace, explosions, high-voltage power lines, nuclear plants, measurements and medical diagnostic, and so on. It is well known that the transmission loss of near-infrared light (700-870 nm) in fiber is extremely low and high-power near-infrared laser source is commercially. As a results, typically it uses near-infrared light as light sources 1,5,11,14,15,24 . The bandgap energy of PPCs should be only slightly less than the photon energy of incident light. Therefore, for near-infrared light conversion, GaAs p-n junction material is an excellent choice 3,11,14,26 . The operating voltage of the PPCs is mainly determined by the bandgap of active laye...

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confidence: 99%

Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter

Zhao

Sun

Sheng

et al. 2016

Sci Rep

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<title>Power supply of the semiconductor laser with a voltage converter</title>

Cited by 1 publication

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Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter

Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter

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