2026-10-14T17:15:47Z https://www.scidb.cn/oai

10.57760/sciencedb.03077 2022-11-24T17:07:30Z

2022-11-24 Long‑term stable 850‑Hz linewidth single‑longitudinal‑mode ring cavity fber laser using polarization‑maintaining fber doi:10.57760/sciencedb.03077 en A long-term stable single-longitudinal-mode (SLM) all polarization-maintaining (PM) compound-ring cavity fber laser is reported. The results show that the PM fber’s strong ability to resist the environment disturbance allows fnely designing the length of each secondary cavity in real time according to the main cavity under the laboratory environment, and then the efective longitudinal mode spacing can be sufciently increased by accurately using the Vernier efect, so that the mode-hopping can be efectively suppressed. Furthermore, the temperature compensation is used for asynchronously fneadjusting each cavity length to follow the Vernier efect requirement more strictly. The mode-hopping-free SLM operation time of the packaged laser reaches 11 h. As far as we know, this is the longest SLM free running time of ring cavity fber laser to date. The optical signal to noise ratio of the laser reaches 77 dB and the linewidth is less than 850 Hz with up to 50 mW maximum output power single‑longitudinal‑mode; ring cavity; 850‑Hz linewidth Haowei Liu Qiao Lu Shanshan Wei Bo Yao Li Wei Qinghe Mao PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1007/s00340-020-07464-x Science Data Bank