This article studies stability control of laser wireless energy transfer, and experiment is presented. Based on transfer optical experiment, the experiment of broadband gallium arsenide (GaAs) cells and monocrystalline silicon (Si) cells photoelectric conversion ratio was tested. We comprehensively studied the factors that affect the conversion efficiency of photovoltaic cells. Different wave band, incident power, uniformity of power density, incident angle, and temperature were listed as main factors in our experiment. And uniformity of power density and temperature are found to be important for the efficiency of photocell conversion. With the relatively uniform power density at 808 nm, the highest photoelectric conversion ratio for GaAs photocell and Si photocell was measured to be 55% and 25% respectively, Besides, photoelectric conversion ratio was insensitive to angle that range ±10°. This work may provide experimental data accumulation to improve the conversion efficiency for long-distance wireless laser energy transmission and even solar power station in the near future.
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