2026-10-14T22:52:59Z https://www.scidb.cn/oai

10.57760/sciencedb.03007 2022-11-24T17:07:27Z

2022-11-24 Narrow-bandwidth actively Q-switched all-fiber laser by suppressing ASE gain self-saturation doi:10.57760/sciencedb.03007 en This paper proposes and demonstrates a novel method to produce the narrowbandwidth, narrow-pulse-width and high-repetition-rate pulses with actively Q-switched ringcavity all-fiber lasers. By using a specially designed low-reflectivity cladding power stripper in the cavity, and inserting a length-optimized ytterbium-doped single-cladding fiber self-pumped by the backward amplified spontaneous emission (ASE) from the YDF to improve the amplification of the initial weak ASE feedback by the narrowband filter, the ASE gain self-saturation can be suppressed efficiently, and the lasing pulses can be established quickly within the opening time of Q-switch even operating for very high repetition-rate. With the proposed technique, watt-level Q-switched pulses with bandwidth and pulse width narrowed to 0.15 nm and 9 ns, and repetition rate up to 175 kHz are achieved 全光纤激光器 ; Q开关; 窄带宽 BO YAO DONG ZHANG JI ZHANG SHANSHAN WEI XUECHUN LIN QINGHE MAO PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1364/OE.27.027345 Science Data Bank