基于过渡金属二卤化物MoS₂、MoSe₂、WS₂和WSe₂的调Q光纤激光器。

Q-switched fiber laser based on transition metal dichalcogenides MoS(2), MoSe(2), WS(2), and WSe(2).

作者信息

Chen Bohua, Zhang Xiaoyan, Wu Kan, Wang Hao, Wang Jun, Chen Jianping

出版信息

Opt Express. 2015 Oct 5;23(20):26723-37. doi: 10.1364/OE.23.026723.

DOI:10.1364/OE.23.026723

Abstract

In this paper, we report 4 different saturable absorbers based on 4 transition metal dichalcogenides (MoS(2), MoSe(2), WS(2), WSe(2)) and utilize them to Q-switch a ring-cavity fiber laser with identical cavity configuration. It is found that MoSe(2) exhibits highest modulation depth with similar preparation process among four saturable absorbers. Q-switching operation performance is compared from the aspects of RF spectrum, optical spectrum, repetition rate and pulse duration. WS(2) Q-switched fiber laser generates the most stable pulse trains compared to other 3 fiber lasers. These results demonstrate the feasibility of TMDs to Q-switch fiber laser effectively and provide a meaningful reference for further research in nonlinear fiber optics with these TMDs materials.

摘要

在本文中，我们报道了基于4种过渡金属二卤化物（MoS₂、MoSe₂、WS₂、WSe₂）的4种不同的可饱和吸收体，并利用它们对具有相同腔结构的环形腔光纤激光器进行调Q。发现在四种可饱和吸收体中，采用相似制备工艺时MoSe₂表现出最高的调制深度。从射频光谱、光谱、重复频率和脉冲持续时间等方面对调Q操作性能进行了比较。与其他3种光纤激光器相比，WS₂调Q光纤激光器产生的脉冲序列最稳定。这些结果证明了过渡金属二卤化物有效调Q光纤激光器的可行性，并为利用这些过渡金属二卤化物材料进行非线性光纤光学的进一步研究提供了有意义的参考。