Single-frequency linearly polarized Q-switched fiber laser based on a Nb2GeTe4 saturable absorber
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Published:2022-12-21
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ISSN:1674-1056
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Container-title:Chinese Physics B
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language:
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Short-container-title:Chinese Phys. B
Author:
Chen Siyu,Deng Haiqin,Zhang Wanru,Dai Yongping,Wang Tao,Yu Qiang,Li Can,Jiang Man,Su Rongtao,Wu Jian,Zhou Pu
Abstract
Abstract
We report a single-frequency linearly polarized Q-switched fiber laser based on a Nb2GeTe4 saturable absorber (SA). The Nb2GeTe4 SA triggers passive Q-switching of the laser, and an un-pumped Yb-doped fiber together with a 0.08-nm-bandwidth polarization-maintaining fiber Bragg grating act as an ultra-narrow bandwidth filter to realize single-longitudinal-mode (SLM) oscillation. The devices used in the laser are all polarization-maintaining to ensure linearly polarized laser output. Stable SLM linearly polarized Q-switching operation at 1064.6 nm is successfully achieved with a shortest pulse width of 1.36 μs, a linewidth of 28.4 MHz, a repetition rate of 28.3-95.9 kHz, and a polarization extinction ratio of about 30 dB. It is believed that the single-frequency linearly polarized pulsed fiber laser studied in this paper has great application value in gravitational wave detection, beam combining, nonlinear frequency conversion, and other fields.
Subject
General Physics and Astronomy
Cited by
1 articles.
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