中国激光, 2018, 45 (1): 0101007, 网络出版: 2018-01-24
基于WS2可饱和吸收体的窄线宽皮秒脉冲光纤激光器 下载: 887次
Narrow Linewidth Picosecond Pulsed Fiber Lasers Based on WS2 Saturable Absorber
激光器 掺铒光纤激光器 可饱和吸收体 光纤布拉格光栅 窄线宽脉冲 lasers erbium-doped fiber laser saturable absorber fiber Bragg grating narrow linewidth pulse
摘要
针对超短脉冲光纤激光器光谱线宽较大的问题进行研究, 利用RP Fiber软件对激光器腔内脉冲演化过程进行模拟计算, 分析了几种可饱和吸收体对激光器输出脉冲宽度和线宽的影响, 并对激光器的腔长和光纤布拉格光栅(FBG)参数进行了优化。最终, 根据优化结果, 搭建了一种基于WS2可饱和吸收体的环形腔被动锁模皮秒脉冲掺铒光纤激光器, 并利用窄带FBG对输出脉冲的光谱线宽进行压缩, 获得了中心波长为1549.4 nm、脉冲宽度为171 ps的窄线宽超短脉冲输出, 其3 dB光谱线宽为0.02 nm。
Abstract
The problem of large spectral linewidth of ultrashort pulse laser is studied. The pulse evolution process in the laser cavity is simulated by RP Fiber software. The effects of different saturable absorber versus the pulse width and spectral linewidth on the laser are studied, and the cavity length and fiber Bragg grating (FBG) parameters of the laser are optimized. Finally, a passively mode-locked picosecond pulse erbium-doped ring fiber laser based on WS2 saturable absorber is designed according to the optimization results. The spectral linewidth of the output pulse is compressed by the narrowband FBG, and a narrow linewidth ultrashort-pulse output with center wavelength of 1549.4 nm, pulse width of 171 ps and 3 dB spectral linewidth of 0.02 nm is obtained.
徐成阳, 金亮, 陈华龙, 张贺, 徐英添, 邹永刚, 马晓辉, 吴国盛, 隋庆学, 张志敏. 基于WS2可饱和吸收体的窄线宽皮秒脉冲光纤激光器[J]. 中国激光, 2018, 45(1): 0101007. Xu Chengyang, Jin Liang, Chen Hualong, Zhang He, Xu Yingtian, Zou Yonggang, Ma Xiaohui, Wu Guosheng, Sui Qingxue, Zhang Zhimin. Narrow Linewidth Picosecond Pulsed Fiber Lasers Based on WS2 Saturable Absorber[J]. Chinese Journal of Lasers, 2018, 45(1): 0101007.