采用环形再生腔结构的飞秒激光啁啾脉冲放大研究  

A ring Ti:sapphire regenerative amplifier for high energy chirped pulse amplification

作　　者：张伟[1] 滕浩[1] 王兆华[1] 沈忠伟[1] 刘成[1] 魏志义[1] 

机构地区：[1]中国科学院物理研究所,北京凝聚态物理国家实验室,北京100190

出　　处：《物理学报》2013年第10期202-207,共6页Acta Physica Sinica

基　　金：中国科学院知识创新工程重要方向项目(批准号:KJCX2-YW-N36);国家科技支撑计划课题(批准号:2012BAC23B03);国家自然基金(批准号:11174361);中国科学院科研装备研制项目(批准号:2010004)资助的课题~~

摘　　要：采用环形再生腔结构的啁啾脉冲放大技术方案,在重复频率100Hz,单脉冲能量33.1mJ的532nm激光抽运下,从钛宝石激光中获得了单脉冲能量9.84mJ的放大输出,对应的斜效率达33.1%.在重复频率10Hz的情况下,同样获得了单脉冲能量为9.64mJ,对应斜效率达36.8%的高效率放大结果.通过色散补偿压缩该啁啾激光脉冲后的单脉冲能量为6.36mJ,脉冲宽度为59.7fs.测量结果表明典型的能量不稳定度为1.85%.Based on chirped-pulse amplification technology,a ring cavity Ti：sapphire regenerative amplifier with high output energy is demonstrated.Under the 532 nm pump energy of 33.1 mJ at a repetition rate of 100 Hz,the chirped laser pulse with energy of 9.84 mJ is obtained,corresponding to a slope efficiency of 33.1%.Instead,using the pump laser with energy of 32.0 mJ at a repetition rate of 10 Hz,we also obtain 9.64 mJ pulse energy with a corresponding slope efficiency of 36.8%.By optimizing the dispersion among all optical materials,stretcher and compressor,the shortest pulse has an energy of 6.36 mJ and a pulse width of 59.7 fs,and the energy fluctuation is 1.85 %（RMS）over 4000 shots after the compressor.The performances show that it may pave the way for ultrafast applications and serves as a front stage toward TW even PW laser system with high contrast ratio.

关 键 词：啁啾脉冲放大 再生放大 飞秒激光 环形腔 

分 类 号：TN722[电子电信—电路与系统]