具有多吉赫兹重复频率的自锁模紫翠宝石飞秒激光器。

Self-mode-locked alexandrite femtosecond lasers with multi-GHz repetition rates.

作者信息

Miao Rulin, Nie Yi, Wang Shiwu, Yu Haohai, Wang Jiyang, Zhang Huaijin, Wu Yicheng

出版信息

Opt Lett. 2021 Apr 15;46(8):1979-1982. doi: 10.1364/OL.423249.

Abstract

We report the laser-diode pumped multi-gigahertz (GHz) self-mode-locked alexandrite femtosecond (fs) lasers for the first time, to the best of our knowledge. Using a simple linear cavity, stable mode-locked laser was achieved with a repetition rate of 3.6 GHz and a pulse width of 237 fs. Additionally, the second-harmonic mode-locked pulse was realized with a repetition rate of 7.5 GHz and a pulse width of 201 fs based on the Fabry-Perot effect generated in the laser cavity. It was observed that this laser possesses advantages of high repetition rate and short pulse width that enable the development of promising applications in modern ultrafast photonics.

摘要

据我们所知，我们首次报道了激光二极管泵浦的多吉赫兹（GHz）自锁模紫翠宝石飞秒（fs）激光器。使用简单的线性腔，实现了重复频率为3.6 GHz、脉冲宽度为237 fs的稳定锁模激光。此外，基于激光腔内产生的法布里-珀罗效应，实现了重复频率为7.5 GHz、脉冲宽度为201 fs的二次谐波锁模脉冲。据观察，这种激光器具有高重复频率和短脉冲宽度的优点，能够在现代超快光子学中开发出有前景的应用。