1720-nm narrow-linewidth all-fiber ring laser based on thulium-doped fiber

Junxiang Zhang; Quan Sheng; Shuai Sun; Chaodu Shi; Shijie Fu; Wei Shi; Jianquan Yao

doi:10.1117/12.2543936

21 February 2020 1720-nm narrow-linewidth all-fiber ring laser based on thulium-doped fiber

Junxiang Zhang, Quan Sheng, Shuai Sun, Chaodu Shi, Shijie Fu, Wei Shi, Jianquan Yao

Proceedings Volume 11260, Fiber Lasers XVII: Technology and Systems; 112600V (2020) https://doi.org/10.1117/12.2543936
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

A 1720-nm thulium-doped all-fiber laser based on a ring-cavity configuration is demonstrated. The long-wavelength lasing near the 1.9-μm thulium emission peak was suppressed using a wavelength division multiplexer and single-mode– multimode–single-mode (SMS) fiber device, which together served as a short-pass filter instead of the grating devices usually used in 1.7-μm thulium fiber lasers. A stable hundred-milliwatt-level 1720-nm laser output with a narrow spectral linewidth on the order of gigahertz was obtained after optimizing the output coupling, the active fiber length and the SMS device.

Citation Download Citation

Junxiang Zhang, Quan Sheng, Shuai Sun, Chaodu Shi, Shijie Fu, Wei Shi, and Jianquan Yao "1720-nm narrow-linewidth all-fiber ring laser based on thulium-doped fiber", Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112600V (21 February 2020); https://doi.org/10.1117/12.2543936

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