纳秒
材料科学
Q开关
饱和吸收
光纤激光器
激光阈值
光学
激光器
光电子学
脉冲持续时间
黑磷
脉冲激光沉积
脉搏(音乐)
光学腔
物理
探测器
波长
作者
Chunxiang Zhang,Yu Chen,Taojian Fan,Yanqi Ge,Chujun Zhao,Han Zhang,Shuangchun Wen
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2020-01-25
卷期号:28 (4): 4708-4708
被引量:30
摘要
Black phosphorus (BP), a prosperous two-dimensional optoelectronic material, has been deeply developed for various optoelectronics applications. Here, we demonstrate a sub-hundred nanosecond passively Q-switched Er-doped all-fiber laser with BP as the saturable absorber (SA). The BP-SA is fabricated by a controllable optical deposition technique. To achieve the sub-hundred nanosecond Q-switching output, we deliberately enlarge the modulation depth of the BP-SA by suitably increasing the time and laser power of the optical deposition and shortening the laser cavity length with an integrated multifunctional component. A stable Q-switched pulse train was obtained with a pulse duration as narrow as 91 ns, and the Q-switched lasing characteristics based on the BP-SA have also been investigated and discussed. The experimental results indicate that the BP material can be employed as an effective SA for the nanosecond pulse generation.
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