Author(s): Fan, YR (Fan, Yingrun); Xiao, JL (Xiao, Jinlong); Shen, ZZ (Shen, Zhengzheng); Hao, YZ (Hao, Youzeng); Liu, JC (Liu, Jiachen); Yang, K (Yang, Ke); Yang, YD (Yang, Yuede); Huang, YZ (Huang, Yongzhen)

Source: CHINESE OPTICS LETTERS Volume: 20 Issue: 6 Article Number: 061401 DOI: 10.3788/COL202220.061401 Published: JUN 10 2022

Abstract: We report a 1.65 mu m square-Fabry-Perot (FP) coupled cavity semiconductor laser for methane gas detection. The laser output optical power can reach 7.4 mW with the side mode suppression ratio about 40 dB. The wavelength tuning range is 2 nm by adjusting the FP cavity injection current, covering the methane absorption line at 1653.72 nm. The lasing wavelength can also be tuned by adjusting the square microcavity injection current or temperature, respectively. Methane gas detection is successfully demonstrated utilizing this laser.

Accession Number: WOS:000874399400006

ISSN: 1671-7694

Full Text: https://www.researching.cn/articles/OJ36592569544aa5e/html