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

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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

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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.

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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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