Narrow-linewidth passively Q-switched fibre laser based on microsphere resonator
Narrow-linewidth passively Q-switched fibre laser based on microsphere resonator
复制标题
基于微球谐振腔的窄线宽被动调Q光纤激光器
DOI：
10.1080/09500340.2020.1810796
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发表时间：
2020
影响因子：
1.3
通讯作者：
Zhou Shouhuan
中科院分区：
文献类型：
--
作者：
Wu Yajie;Zhang Hong;Wang Fangjie;Yang Jiulin;Wang Shutong;Zhou Shouhuan
实验研究了一种基于微球谐振腔（MSR）和石墨烯可饱和吸收体（SA）的稳定窄线宽被动调Q光纤激光器。电弧放电法制备的微波反射镜具有制作简单、自由光谱范围宽、使用灵活等特点。它作为一个窄带通滤波器，以确保窄线宽操作。获得了稳定的0.016nm窄线宽被动调Q脉冲。输出脉冲的脉冲宽度为5.2 µs，重复频率为28 kHz，信噪比（SNR）为± 60 dB。结果表明，我们的工作为实现窄线宽脉冲光纤激光器提供了一条有效的途径。
We experimentally demonstrate a stable narrow-linewidth passivelyQ-switched fibre laser based on a microsphere resonator (MSR) and graphene saturable absorber (SA). The MSR made by the arc discharge method has the characteristics of easy fabrication, broad free spectral range (FSR) and flexibility. And it acts as a narrow band-pass filter to ensure narrow-linewidth operation. A stable passivelyQ-switched pulse with 0.016 nm narrow spectral linewidth is successfully achieved. The output pulse has the pulse width of 5.2 µs, repetition frequency of 28 kHz and high signal to noise ratio (SNR) of ∼60 dB. The results demonstrate that our works may provide an effective way to achieve narrow-linewidth pulsed fibre lasers.