High-output power GaSb-based diode laser with narrow n-type cladding layer

Yihang Chen; Yanzhao Yang; Tianfang Wang; Hongguang Yu; Jianmei Shi; Guiming Zhang; Bin Wu; Chengao Yang; Yu Zhang; Yingqiang Xu; Zhichuan Niu

doi:10.1117/12.2643950

27 December 2022 High-output power GaSb-based diode laser with narrow n-type cladding layer

Yihang Chen, Yanzhao Yang, Tianfang Wang, Hongguang Yu, Jianmei Shi, Guiming Zhang, Bin Wu, Chengao Yang, Yu Zhang, Yingqiang Xu, Zhichuan Niu

Author Affiliations +

Proceedings Volume 12311, Semiconductor Lasers and Applications XII; 123110X (2022) https://doi.org/10.1117/12.2643950
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

High output power GaSb-based diode lasers are critical component for 2μm laser systems. We compare four structures with different layer thickness combinations to optimize lower cladding layer thickness. Four structures have similar optical confinement factor of active region. As the lower cladding layer thins, the threshold current increases and the series resistance slightly reduces. Among the four structures, laser with 370nm waveguide layer and 1200nm n-type cladding layer functions the best. An output power of 1.21W at 3A is obtained, the threshold current is 0.11A, the series resistance is 0.25Ωthe slope efficiency is 0.42W/A.

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Yihang Chen, Yanzhao Yang, Tianfang Wang, Hongguang Yu, Jianmei Shi, Guiming Zhang, Bin Wu, Chengao Yang, Yu Zhang, Yingqiang Xu, and Zhichuan Niu "High-output power GaSb-based diode laser with narrow n-type cladding layer", Proc. SPIE 12311, Semiconductor Lasers and Applications XII, 123110X (27 December 2022); https://doi.org/10.1117/12.2643950

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