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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
脉冲序列
啁啾脉冲放大
普克尔盒
pulse sequence
chirped pulse amplification
pockels cell