论文部分内容阅读
基于啁啾光纤布拉格光栅(C-FBG)与半导体可饱和吸收镜(SESAM)相结合实现了光纤掺Yb3+线型锁模激光器。采用976nm半导体激光器,以高掺杂浓度的掺Yb3+光纤作为增益介质,以SESAM作一端的反射镜,以C-FBG引入大的负色散,并作为另一端反射镜,最终获得了稳定皮秒脉冲序列的输出。其中心波长为1045nm,平均功率为12mW,基频重复频率为17.07MHz,脉宽约为3ps。详细讨论了高阶锁模光脉冲的演化方式。该锁模光纤激光器可以完全自启动,可以长时间稳定工作,有望成为高功率超短脉冲激光器的种子源。
A fiber-doped Yb3 + linear mode-locked laser was realized based on the combination of chirped fiber Bragg grating (C-FBG) and semiconductor saturable absorption mirror (SESAM). A 976 nm semiconductor laser was used to gain high doping concentration of doped Yb3 + fiber as the gain medium, SESAM as one end of the reflector, C-FBG to introduce a large negative dispersion, and as the other end of the mirror, finally obtained a stable picosecond pulse The output of the sequence. The center wavelength of 1045nm, the average power of 12mW, the fundamental frequency of 17.07MHz, pulse width of about 3ps. The evolution of high-order mode-locked light pulses is discussed in detail. The mode-locked fiber laser can be fully self-starting, can work stably for a long time, and is expected to be the seed source of a high power ultrashort pulse laser.