光学学报, 2019, 39 (4): 0414002, 网络出版: 2019-05-10
基于Sagnac环的可调谐双脉冲耗散孤子掺Yb光纤激光器 
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Tunable Double Pulse Dissipative Solitons Yb-Doped Fiber Laser Based on Sagnac Loop
光纤光学 可调谐波长 双脉冲 全正色散 Sagnac环 耗散孤子 fiber optics tunable wavelength double pulse all-normal-dispersion Sagnac loop dissipative solitons
摘要
在全正色散(ANDi)系统中,设计出一种波长可调谐的双脉冲耗散孤子(DSs)被动锁模掺Yb光纤激光器。以Sagnac环为全光纤结构的可调谐光谱滤波器,以非线性偏振演化(NPE)效应为锁模机理,在ANDi掺Yb光纤系统中得到了稳定的双脉冲DSs锁模输出。通过调节Sagnac环的偏振状态实现双脉冲DSs输出脉冲光谱的可调谐,其可调谐范围为1038.96~1044.80 nm。通过改变腔体抽运功率,双脉冲DSs的脉冲间隔可在0.034~0.021 μs范围内变化。当抽运功率为520 mW时,双脉冲DSs的最大输出脉冲能量为34.3 nJ,重复频率为2.285 MHz。
Abstract
A double pulse dissipative solitons (DSs) passively mode-locked Yb-doped fiber laser with a tunable wavelength is proposed and demonstrated in the all-normal-dispersion (ANDi) system. Using a Sagnac loop as a tunable all-fiber format spectral filter and the effect of nonlinear polarization evolution (NPE) as the mode-locking mechanism, a stabilized double pulse DSs mode-locked pulse output is obtained in the ANDi Yb-doped fiber system. When the polarization state of the Sagnac loop changes, the tuning of the double pulse DSs output spectrum is realized with a tuning range of 1038.96-1044.80 nm. Furthermore, by changing the pump power of the laser cavity, the pulse-spacing of the double pulse can be changed from 0.034 μs to 0.021 μs. Under the pump power of 520 mW, the double pulse DSs pulse has the maximum energy of 34.3 nJ and the repetition rate of 2.285 MHz.
朱晓军, 耿健, 章国安, 徐晨, 金丽, 曹娟, 季彦呈. 基于Sagnac环的可调谐双脉冲耗散孤子掺Yb光纤激光器[J]. 光学学报, 2019, 39(4): 0414002. Xiaojun Zhu, Jian Geng, Guoan Zhang, Chen Xu, Li Jin, Juan Cao, Yancheng Ji. Tunable Double Pulse Dissipative Solitons Yb-Doped Fiber Laser Based on Sagnac Loop[J]. Acta Optica Sinica, 2019, 39(4): 0414002.
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