摘要
针对高能量千赫兹重复频率飞秒激光的应用需求,设计了一套采用线性再生腔结构的高效率飞秒钛宝石激光啁啾脉冲放大系统.通过优化腔型设计,在重复频率为1 kHz、单脉冲能量为20 mJ的527 nm激光抽运下,将展宽后的800 nm啁啾脉冲激光的能量放大到5.8 mJ,对应斜效率达到30.7%.进一步通过色散补偿压缩脉冲宽度,获得了单脉冲能量为4 mJ、脉冲宽度为45.7 fs的输出,稳定性测量表明激光的能量抖动仅为0.18%(均方根值).
To meet the application requirements for high energy kHz repetition rate femtosecond laser, a high-efficiency femtosecond Ti ： sapphire linear regenerative amplifier is designed. By optimizing the parameters of the cavity, 5.8 mJ chirped pulses at 800 nm are obtained, under pump energy of 20 mJ with wavelength of 527 nm at 1 kHz repetition rate, corresponding to a slope efficiency of 30.7%. By compensating for the dispersion, 4 mJ laser pulses at 800 nm with pulse duration of 45.7 fs are achieved. The energy fluctuation is 0.18% （RMS） in 5 h.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第10期185-190,共6页
Acta Physica Sinica
基金
国家重点基础研究发展计划(批准号:2013CB922402)
国家重大科学仪器设备开发专项基金(批准号:2012YQ120047)
国家自然科学基金(批准号:11174361)资助的课题~~
关键词
啁啾脉冲放大
再生放大
飞秒激光
线性腔
chirped-pulse amplification
regenerative amplifier
femtosecond laser pulse
linear cavity
