光子学报, 2017, 46 (6): 0614002, 网络出版: 2017-06-27
基于类噪声方波脉冲的掺铒光纤激光器
Erbium-Doped Fiber Laser Based on the Noise-like Square Wave Pulse
摘要
搭建了长腔“8”字型掺铒光纤激光器,并对产生的谐波锁模方波脉冲进行了实验研究.结果表明,该脉冲具有光滑的宽带光谱,示波器上显示为方波脉冲,但自相关迹证实其为类噪声脉冲,即为类噪声方波脉冲; 通过调节偏振控制器和泵浦功率等激光器腔内参量,获得了高达5阶的谐波锁模类噪声方波脉冲; 该类噪声方波脉冲并非可以无限增大脉冲能量,而是在一定条件下产生脉冲分裂,出现谐波锁模方波脉冲现象.
Abstract
The long cavity "8" shaped erbium-doped fiber laser to produce a square wave harmonic mode-locked pulses were studied experimentally. This type has a smooth broadband pulse spectrum shown as a square wave pulse on the oscilloscope, but confirmed that the autocorrelation trace of pulse noise categories, namely noise-square wave pulse. Experiment by adjusting the laser cavity parameters, such as polarization controller and pump power, gets up to 5th order harmonic mode-locked noise-square wave pulse. Experimental results show that the noise-square-wave pulses generated in the fiber laser is not infinitely increasing the pulse energy, but under certain conditions will produce a pulse division, square wave pulse harmonic mode locking phenomenon.
张永棠. 基于类噪声方波脉冲的掺铒光纤激光器[J]. 光子学报, 2017, 46(6): 0614002. ZHANG Yong-tang. Erbium-Doped Fiber Laser Based on the Noise-like Square Wave Pulse[J]. ACTA PHOTONICA SINICA, 2017, 46(6): 0614002.