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Journal Articles Materials Year : 2018

GaN-Based Laser Wireless Power Transfer System


The aim of this work is to present a potential application of gallium nitride-based optoelectronic devices. By using a laser diode and a photodetector, we designed and demonstrated a free-space compact and lightweight wireless power transfer system, whose efficiency is limited by the efficiency of the receiver. We analyzed the effect of the electrical load, temperature, partial absorption and optical excitation distribution on the efficiency, by identifying heating and band-filling as the most impactful processes. By comparing the final demonstrator with a commercial RF-based Qi system, we conclude that the efficiency is still low at close range, but is promising in medium to long range applications. Efficiency may not be a limiting factor, since this concept can enable entirely new possibilities and designs, especially relevant for space applications.
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hal-02356738 , version 1 (02-12-2020)



Carlo de Santi, Matteo Meneghini, Alessandro Caria, Ezgi Dogmus, Malek Zegaoui, et al.. GaN-Based Laser Wireless Power Transfer System. Materials, 2018, 11 (1), pp.153. ⟨10.3390/ma11010153⟩. ⟨hal-02356738⟩
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