4.5MW小型化全固态腔倒空飞秒掺钛蓝宝石激光器

GENERATION OF 4.5MW FEMTOSECOND PULSE WITH A COMPACT ALL SOLID-STATE CAVITY-DUMPED Ti:SAPPHIRE LASER

研制了国内首台腔倒空克尔透镜自锁模掺钛蓝宝石激光器 ,该激光采用二极管抽运的全固态连续波 5 3 2nm激光抽运 .在 5 .4W的抽运功率下 ,获得了峰值功率大于 4 .5MW、脉宽小于 18fs的稳定锁模脉冲 ,其重复频率可低至2 0kHz ,所占尺寸约 5 3 .5cm× 2 0 .5cm .据知 ,此结果是迄今重复率最低。

A cavity-dumped Kerr-lens Mode-Locked (KLM) Ti:S laser is demonstrated with an all solid-state continuous - wave 532mn laser as the pump resource. Stable mode-locked laser pulse with a peak power of 4.5MW was obtained under 5.4W pump power. The pulse duration width is shorter than 18fs and the repetition rates can be tuned as low as 20kHz. To our knowledge, this is the lowest repetition rate and the most compact size from the solid-state cavity-dumped femtosecond laser.