400 mW narrow linewidth single-frequency fiber ring cavity laser in 2 um waveband | Zendy

Taoce Yin | Zendy; Yufu Song | Zendy; Xiaogang Jiang | Zendy; Feihong Chen | Zendy; Sailing He | Zendy

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400 mW narrow linewidth single-frequency fiber ring cavity laser in 2 um waveband

Author(s) -

Taoce Yin,

Yufu Song,

Xiaogang Jiang,

Feihong Chen,

Sailing He

Publication year - 2019

Publication title -

optics express

Language(s) - German

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.015794

Subject(s) - laser linewidth , thulium , materials science , optics , fiber laser , lasing threshold , slope efficiency , laser , optical fiber , dispersion shifted fiber , polarization maintaining optical fiber , bandwidth (computing) , optoelectronics , doping , fiber optic sensor , physics , telecommunications , computer science

We present a single-frequency thulium-doped fiber laser (TDFL) with a narrow linewidth of 20 kHz. Stable single-longitudinal-mode (SLM) lasing operation at 1957 nm is achieved using a segment of un-pumped polarization-maintaining thulium-doped fiber (PM-TDF) as an ultra-narrow bandwidth filter. A high optical signal-to-noise ratio (OSNR) of over 60 dB is obtained and a high power of over 400 mW is achieved with a high slope-efficiency (~45.8%) thulium-doped fiber amplifier (TDFA).

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