多脉冲序列飞秒钛宝石激光的啁啾脉冲放大  

Chirped pulse amplification of femtosecond pulse sequences in a Ti:sapphire laser

作　　者：葛绪雷[1,2] 马景龙[2] 郑轶[2] 鲁欣[2] 蒋刚[1] 李玉同[2] 魏志义[2] 张杰[2,3] 

机构地区：[1]四川大学原子与分子物理研究所,成都610065 [2]中国科学院物理研究所光物理重点实验室,北京100190 [3]上海交通大学物理系激光等离子体教育部重点实验室,上海200240

出　　处：《物理学报》2012年第21期244-248,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10974250,60978031)资助的课题~~

摘　　要：在数太瓦钛宝石啁啾脉冲放大系统中(极光Ⅱ升级装置),对多脉冲序列的放大过程进行了详细的实验研究,获得了多脉冲序列的放大输出.每一个放大脉冲串中包含有19个独立的飞秒单脉冲,其相邻间隔为14.8 ns,对应的重复频率为67.5 MHz.脉冲串的总能量约为122 mJ,各单脉冲能量从20 mJ指数衰减至0.5 mJ,脉宽约为60fs,对应的峰值功率约为10^(11)—10^(10)W.这种脉冲序列在产生长寿命激光等离子体、激光微加工等方面有重要应用前景.An amplified femtosecond pulse sequence is generated in a multi-TW Ti： sapphire chirped pulse amplification system （JG-II facility）. The pulse interval of the pulse sequence is 14.8 ns, corresponding to a frequency of 67.5 MHz. The compressed pulse sequence can reach 122 mJ in 19 independent pulses with a pulse width of about 60 fs. The energy of the pulses declines from 20 mJ to 0.5 mJ, corresponding to a peak power from 1011 W to 1010 W. The pulse sequence has important applications in lengthening the lifetime of the laser produced plasma channel in air and in microfabrication.

关 键 词：脉冲序列 啁啾脉冲放大 普克尔盒 

分 类 号：TN722[电子电信—电路与系统]