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Proceedings Paper

High-power high-efficiency tilted waved laser based on the quasi-periodicity photonic crystal structure
Author(s): Zhonghao Chen; Aiyi Qi; Shaoyu Zhao; Hongwei Qu; Xuyan Zhou; Xiaoxu Xing; Xueyou Wang; Wanhua Zheng
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Paper Abstract

A tilted wave (TW) laser based on the quasi-periodicity photonic crystal (QPC) structure is studied to improve the maximum power and wall-plug efficiency of laser diodes. In this work, we first use the longitudinal QPC structure instead of the thick passive waveguide compared with previously reported. In order to localize the first order mode, we designed and optimized the longitudinal QPC structure. The optical confinement factor (OCF) of the fundamental mode is only onesixth of the first order mode. In the experiment, a continuous wave power of 12.8 W at 980 nm is achieved with a peak power conversion efficiency of 57.2%. The laser emitted two nearly symmetric narrow vertical beams in far field pattern, which has a full width at half maximum (FWHM) of 7.6° each.

Paper Details

Date Published: 6 November 2018
PDF: 6 pages
Proc. SPIE 10812, Semiconductor Lasers and Applications VIII, 108121C (6 November 2018); doi: 10.1117/12.2502518
Show Author Affiliations
Zhonghao Chen, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Aiyi Qi, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Shaoyu Zhao, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Hongwei Qu, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Xuyan Zhou, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Xiaoxu Xing, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Xueyou Wang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Wanhua Zheng, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 10812:
Semiconductor Lasers and Applications VIII
Ning Hua Zhu; Werner H. Hofmann, Editor(s)

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