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High efficiency conversion of laser energy and its application to optical power transmission

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5 Author(s)
Beaumont, B. ; Lab. de Phys. du Solide et Energie Solaire, CNRS, Valbaonne, France ; Guillaume, J.C. ; Vilela, M.F. ; Saletes, A.
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The authors address several aspects of the optical power transmission concept: the modeling of monochromatic conversion efficiency versus matched bandgap of a photovoltaic (PV) cell, parameterized as a function of illumination intensity; the selection criteria of the suitable semiconductors which are expected to have the highest PV conversion efficiency for the various applications; laboratory experimental study using an (Al,Ga)As laser beam transmitted through an optical fiber: a GaAs-based PV cell, designed for being set up at the optical fiber extremity, has been grown by MOVPE and has demonstrated an efficiency of 52.8% under 14-W/cm2 illumination. Several future applications, concerning transmission of optical power in space and from space, or through optical fiber in terrestrial utilizations, are discussed

Published in:

Photovoltaic Specialists Conference, 1991., Conference Record of the Twenty Second IEEE

Date of Conference:

7-11 Oct 1991