GaAs converter for high power laser diode

Fave, Alain; Kaminski, A.; Gavand, M.; Mayet, L.; Laugier, A.

doi:10.1109/pvsc.1996.563957

Cited by 22 publications

(8 citation statements)

References 8 publications

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“…All things considered, 830-860 nm is the most favorable wavelength for GaAs since it achieves a balance between low thermalization losses and a high absorption coefficient, as different authors have stated. 64,69,71 Open-circuit voltage and efficiency Neglecting series resistance effects, the highest efficiency achievable in a GaAs S-PVLPCs with an ideal internal radiative efficiency (radiative limit) depends, first on the laser wavelength and the input power. Figure 5C illustrates this case for a GaAs S-PVLPC with 5 mm thick absorber.…”

Section: Absorber Materials and Laser Wavelengthmentioning

confidence: 99%

Beaming power: Photovoltaic laser power converters for power-by-light

Algora

García

Delgado

et al. 2022

Joule

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Section: Absorber Materials and Laser Wavelengthmentioning

confidence: 99%

Beaming power: Photovoltaic laser power converters for power-by-light

Algora

García

Delgado

et al. 2022

Joule

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“…However, a considerably lower efficiency (60-65%) is expected when practical losses resulting from reflection, recombination, layer or contact resistances and the post-growth manufacturing technology are taken into account. [2][3][4] Measured efficiencies of up to 56% were published for GaAs cells with prismatic covers bonded to the cell surfaces. 5,6 The efficiency refers to a homogeneous illumination with light in the wavelength range of 820-830 nm.…”

Section: Introductionmentioning

confidence: 99%

GaAs converters for high power densities of laser illumination

Oliva¹,

Dimroth²,

Bett³

2008

Progress in Photovoltaics

120

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Photovoltaic power converters can be used to generate electricity directly from laser light. In this paper we report the development of GaAs PV power converters with improved conversion efficiency at high power densities. The incorporation of a lateral conduction layer (LCL) on top of the window layer resulted in a considerable gain in efficiency at high illumination levels. Additional performance improvements were obtained by using a metal electrode grid design and antireflection coating optimised for monochromatic and inhomogeneous laser light. Maximum monochromatic (810 nm) optical-to-electrical conversion efficiency of 54Á9% at 36Á5 W/cm 2 has been achieved. The characteristics of laser power converters with p/n and n/p polarity are discussed in this paper. Moreover, different materials and doping levels were applied in the LCL. The performance of these different device structures at high laser intensity is presented and discussed. It is shown that the lateral series resistance of the cell has a major impact on the overall device performance.

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“…PV cells have been designed to increase optical/electrical conversion efficiency and optical fiber coupling efficiency [6,7], and a system output of 300 mW through 200-m long optical fiber has been achieved [7]. However, this is still not high enough for various kinds of sensors and measurement equipment.…”

Section: Introductionmentioning

confidence: 99%

A Stable 2-W Supply Optical Powering System

Yasui

Ohwaki²,

Mino³

2002

IEEJ Trans.EIS

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A 2-W supply optical powering system that maintains electrical isolation is described. The output power of this system is stable and higher than that of conventional systems, and is not affected by environmental stresses, such as bends in the optical fiber or increased PV cell temperature, owing to its feedback control function. The system mainly consists of laser diodes, optical fibers, photovoltaic (PV) cells, and a feedback control circuit, and can deliver 2 W of electrical power. In the feedback control circuit, the PV cell output current is compared to the target current, and the laser output is controlled to equalize them. The system also has a safety function that shuts down the laser if an optical fi ber is cut. The system was tested under a high-voltage condition, and the results indicate that it will be useful for driving sensors and measurement equipment used in high-voltage environments.

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GaAs converter for high power laser diode

Cited by 22 publications

References 8 publications

Beaming power: Photovoltaic laser power converters for power-by-light

Beaming power: Photovoltaic laser power converters for power-by-light

GaAs converters for high power densities of laser illumination

A Stable 2-W Supply Optical Powering System

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