Li Wen-Song, Ma Quan, Wu Jia-Ji, Xu Hui-Ying, Cai Zhi-Ping
Appl Opt. 2017 Sep 20;56(27):7749-7755. doi: 10.1364/AO.56.007749.
We report the experimental investigation of visible passively Q-switched Pr-doped all-fiber lasers with tungsten disulfide (WS) saturable absorber, where red-light short-pulse generations from different output mirror transmissions are systemically characterized. The proposed simple and compact all-fiber linear cavity was constructed by a fiber-pigtail-based blue laser-diode pump, a Pr-doped fluorozirconate glass active fiber, and the fiber end-facet mirrors. Integrating a free-standing layered WS film into the laser cavity initiated the Q-switching operation. Stable microsecond-duration output pulses with kilohertz repetition rates are achieved, corresponding to a few mW/nJ average output power and single-pulse energy. The comparisons on red-light Q-switched output parameters for output transmissions of both ∼40% and ∼80% are performed. This work could provide a useful guideline to manipulate the output performance of visible pulsed all-fiber lasers for various practical applications.
我们报道了采用二硫化钨（WS）可饱和吸收体的可见波段被动调Q掺镨全光纤激光器的实验研究，其中系统地表征了不同输出镜透过率下的红光短脉冲产生情况。所提出的简单紧凑的全光纤线性腔由基于尾纤的蓝光激光二极管泵浦源、掺镨氟锆酸盐玻璃有源光纤和光纤端面镜构成。将独立的层状WS薄膜集成到激光腔中启动了调Q操作。实现了具有千赫兹重复频率的稳定微秒级持续时间输出脉冲，对应于几毫瓦/纳焦的平均输出功率和单脉冲能量。对约40%和约80%的输出透过率的红光调Q输出参数进行了比较。这项工作可为操控可见脉冲全光纤激光器的输出性能以用于各种实际应用提供有用的指导。
