带有石墨烯/WS2 异质结构可饱和吸收体的 Tm:YAP 激光器的无源 Q 开关操作

Pub Date : 2023-11-23 DOI:10.1007/s10946-023-10177-z

Xiaolin Zhang, Yunbo Shi, Tianhao Zong, Bangzheng Liu, Yanna Mu, Lihong Liu

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引用次数: 0

摘要

我们在波长为 2 μm 的掺铥钇铝磷酸盐（Tm:YAP）晶体固体激光器中使用石墨烯/WS2 异质结作为可饱和吸收体（SA），并在无源 Q 开关实验中实现了有效的调制性能效率。在 18.80 W 的泵浦功率下，测得的输出功率为 1.293 W，相应的光电转换效率为 6.9%。此外，在 11.50 W 的泵浦功率下，我们在 90.36 kHz 的重复频率下实现了 1.16 μs 的脉冲时间。据我们所知，这是首次将石墨烯/WS2 异质结用作基于 Tm:YAP 晶体的 2 μm 固体激光器的 SA 结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Passive Q-Switched Operation of Tm:YAP Laser with Graphene/WS2 Heterostructure Saturable Absorber

We use a graphene/WS₂ heterojunction as a saturable absorber (SA) in a 2 μm wavelength Thulium-doped Yttrium Aluminum perovskite (Tm:YAP) crystal-based solid-state laser and realize effective modulation performance efficiency in passive Q-switching experiments. At a pump power of 18.80 W, the measured output power is 1.293 W, with a corresponding optical–optical conversion efficiency of 6.9%. Additionally, at a pump power of 11.50 W, we achieve a pulse time of 1.16 μs at a repetition frequency of 90.36 kHz. To the best of our knowledge, this is the first demonstration of the use of graphene/WS₂ heterojunctions as SA structures for 2 μm solid-state lasers based on Tm:YAP crystals.

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