Size effect of WSe2 on red passively Q-switched fiber laser output performance

作者：Wu, Duanduan^*; Guo, Zhenrong; Peng, Jian; Weng, Jian; Cai, Zhiping; Xu, Huiying

来源：Applied Optics, 2018, 57(18): 4955-4959.

DOI：10.1364/AO.57.004955

• INDIUM TIN OXIDE
• SATURABLE ABSORBER
• BLACK PHOSPHORUS
• MOS2

Transition metal dichalcogenides (TMDs) possess a direct bandgap in the visible frequency range and can be applied as attractive visible saturable absorbers (SAs). In this paper, a new TMDs tungsten selenide (WSe2)-based red Q-switcher is fabricated and successfully used for Q-switched pulse generation in a red Pr3+ -doped ZBLAN fiber laser. The passive Q-switching fiber laser at 635.2 nm generates a stable pulse with pulse duration of 504 ns and average output power of 4.91mWas well as a tunable pulse repetition rate of 131.9 -260.4 kHz. Furthermore, the size effect of WSe2 on the 635 nm passive Q-switching output performance is also investigated. Our work will provide certain significance for the optimization of passive Q-switching red fiber lasers based on TMDs.

• 单位
  厦门大学; 宁波大学