中国激光, 2017, 44 (7): 0701002, 网络出版: 2017-07-05   

绿光半导体激光器直接抽运的钛宝石飞秒脉冲

Ti∶Sapphire Femtosecond Pulses Pumped Directly by Green Diode Lasers
作者单位
1 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 陕西 西安 710119
2 中国科学院大学, 北京 100049
摘要
对两个1.45 W/520 nm绿光半导体激光器的输出光束进行整形, 再将其聚焦到钛宝石激光晶体上进行抽运, 并结合GTI(Gires-Tournois Interferometer)镜对腔内色散给予补偿, 实现了稳定的克尔透镜锁模运转, 输出脉冲激光的脉宽为91 fs, 输出功率为208 mW, 输出单脉冲能量为1.59 nJ;优化腔型参数后, 获得的最窄脉宽为82 fs;缩短腔长后, 获得的最高输出功率为232 mW。
Abstract
The laser beams emitted from a pair of 520 nm/1.45 W green diode lasers are shaped and focused on a Ti∶sapphire laser crystal to complete the pumping process. The intracavity dispersion is compensated by using the GTI (Gires-Tournois interferometer) mirrors. The stable Kerr-lens mode locking state is achieved with an output pulse width of 91 fs, an output power of 208 mW, and a single pulse energy of 1.59 nJ. The narrowest pulse width of 82 fs is further realized after the optimization of cavity-type parameters and the maximum output power reaches 232 mW when the cavity length is shortened.
参考文献

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王向林, 胡晓鸿, 徐鹏, 张伟, 杨直, 王屹山. 绿光半导体激光器直接抽运的钛宝石飞秒脉冲[J]. 中国激光, 2017, 44(7): 0701002. Wang Xianglin, Hu Xiaohong, Xu Peng, Zhang Wei, Yang Zhi, Wang Yishan. Ti∶Sapphire Femtosecond Pulses Pumped Directly by Green Diode Lasers[J]. Chinese Journal of Lasers, 2017, 44(7): 0701002.

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