Optimal laser wavelength for efficient laser power converter operation over temperature

Journal Article · Mon Jun 13 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4954014· OSTI ID:22590774

Walker, A. W.; Bett, A. W.; Helmers, H. ^[1]

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1. Fraunhofer Institute for Solar Energy Systems, ISE, Heidenhofstraße 2, 79110 Freiburg (Germany)

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. The model is based on the transfer matrix method coupled to a two-diode model, and is calibrated to experimental data of a GaAs photovoltaic device over laser irradiance and temperature. Since the laser wavelength does not strongly influence the open circuit voltage of the laser power converter, the optimal laser wavelength is determined to be in the range where the external quantum efficiency is maximal, but weighted by the photon flux of the laser.

• OSTI ID: 22590774
• Journal Information: Applied Physics Letters, Vol. 108, Issue 24; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALLIUM ARSENIDES
LASERS
PHOTOVOLTAIC EFFECT
QUANTUM EFFICIENCY
RADIANT FLUX DENSITY
TEMPERATURE DEPENDENCE
TRANSFER MATRIX METHOD
WAVELENGTHS