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1.9W single-frequency, grating external-cavity tapered laser with narrow linewidth
Author(s): Qian Li; Min Wan; Yan-hua Lu; Xiao-ming Chen; Huai-jin Ren; Hao Tan; Xia-fei Xu; Yi Li
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Paper Abstract

A high-power tunable Littrow grating external-cavity tapered semiconductor laser is designed in this paper. By using the grating external cavity to lock the wavelength and narrow the linewidth, we gained a series of single-frequency laser with the central wavelength at 927 nm, tunable range >20nm and linewidth < 980 fm with the continuous pumping. When the wavelength is 926.8 nm, the threshold current is 1.25A and the oblique efficiency is 0.682 W/A. When the injection current increases to 4A, the maximum output power is up to 1.906W, with the electro-optic efficiency of 21.7%, the linewidth of 700fm, and the beam quality of 1.948 and 3.788 in the fast and slow axis respectively.

Paper Details

Date Published: 17 May 2019
PDF: 5 pages
Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 1117033 (17 May 2019); doi: 10.1117/12.2533883
Show Author Affiliations
Qian Li, Institute of Applied Electronics (China)
Graduate School of China Academy of Engineering Physics (China)
Min Wan, China Academy of Engineering Physics (China)
Yan-hua Lu, Institute of Applied Electronics (China)
Xiao-ming Chen, Institute of Applied Electronics (China)
Huai-jin Ren, Institute of Applied Electronics (China)
Hao Tan, Institute of Applied Electronics (China)
Xia-fei Xu, Institute of Applied Electronics (China)
Yi Li, Institute of Applied Electronics (China)


Published in SPIE Proceedings Vol. 11170:
14th National Conference on Laser Technology and Optoelectronics (LTO 2019)
Jianqiang Zhu; Weibiao Chen; Zhenxi Zhang; Minlin Zhong; Pu Wang; Jianrong Qiu, Editor(s)

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