MW级峰值功率掺钛蓝宝石激光振荡器  

MW-peak-power femtoseond Ti:sapphire oscillator

作　　者：张青[1] 赵研英[1] 魏志义[1] 

机构地区：[1]中国科学院物理研究所光物理重点实验室,北京100190

出　　处：《物理学报》2010年第5期3244-3248,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60808007;10804128);国家重点基础研究发展计划(973)项目(批准号:2007CB815104)资助的课题~~

摘　　要：在常规重复频率77MHz掺钛蓝宝石飞秒激光器的基础上,通过腔内引入Herriott型多通望远镜系统增加总腔长及对腔内色散的深入分析和实验控制,实现了低重复频率、高脉冲能量飞秒激光振荡的稳定运行.在连续功率8.2W的532nm激光抽运下,得到了重复频率11MHz、单脉冲能量达72.73nJ、对应峰值功率MW量级的结果.相对80MHz重复频率下6.25nJ的单脉冲能量及150kW的峰值功率,其输出能力提高了约一个量级.We demonstrate a femtosecond Ti：sapphire oscillator with ultralow repetition rate and ultrahigh peak power by inserting a specially designed Herriott telescope to increase the length of the cavity. By analyzing the intra-cavity dispersion and optimizing the extra-cavity compressor,stable pulses with repetition rate of 11 MHz and single pulse energy higher than 72nJ was obtained under 532 nm pump laser with average power of 8. 2 W. The peak power of the pulses from the novel cavity is much higher than that from the original oscillators.

关 键 词：飞秒激光 掺钛蓝宝石激光器 低重复频率 MW 

分 类 号：TN752[电子电信—电路与系统]