What limits the power conversion efficiency of GaN-based lasers?

Joachim Piprek

doi:10.1117/12.2256129

22 February 2017 What limits the power conversion efficiency of GaN-based lasers?

Joachim Piprek

Proceedings Volume 10098, Physics and Simulation of Optoelectronic Devices XXV; 100980Q (2017) https://doi.org/10.1117/12.2256129
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Shuji Nakamura predicted in his Nobel lecture that GaN-based blue laser diodes are the future of solid state lighting. However, GaN-lasers still exhibit less than 40% electrical-to-optical power conversion efficiency while some blue LEDs exceed 80% and some GaAs-based infrared lasers exceed 70%. This talk investigates the reasons behind the efficiency limitation of GaN-based lasers and proposes an improved efficiency analysis method.

Citation Download Citation

Joachim Piprek "What limits the power conversion efficiency of GaN-based lasers?", Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 100980Q (22 February 2017); https://doi.org/10.1117/12.2256129

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