Dual-bandpass filter for self-starting mode-locking in All-PM NALM-based fiber laser
Dual-bandpass filter for self-starting mode-locking in All-PM NALM-based fiber laser
复制标题
用于基于全保偏 NALM 的光纤激光器中自启动锁模的双带通滤波器
DOI：
10.1117/12.2576390
复制
发表时间：
2021
影响因子：
6.3
通讯作者：
T. Shioda
中科院分区：
文献类型：
--
作者：
M. Nishiura;T. Shioda
我们报告了基于 NALM 的全保偏光纤激光器结合双带通滤波器而不是普通的单窄带通滤波器的优越性。光纤激光器以相对较低的泵浦功率快速开始锁模。双BPF的较短波长带通窗口组件用于诱导Q开关锁模和放大幅度噪声。较长波长的带通窗口组件用于保持 CW 锁模。一旦激光器在较长波长窗口开始锁模，较短波长窗口中的光谱分量就可以忽略不计。激光器通过调整较长波长窗口特性来产生各种超快脉冲。
We report superiorities of a NALM-based all-PM fiber laser incorporating dual-bandpass filter instead of ordinal single narrow bandpass filter. The fiber laser starts mode-locking quickly with relatively low pump powers. Shorter wavelength bandpass window component of dual-BPF is used for inducing Q-switched mode-locking and enlarging amplitude noise. Longer wavelength bandpass window component is used for keeping CW mode-locking. Once the laser starts modelocking at longer wavelength window, spectrum components in shorter wavelength window are negligible. The laser produces various of ultra-fast pulses by adjusting longer wavelength window property.