采用光谱展宽技术的钛宝石飞秒激光放大器

Ti∶Sapphire Femtosecond Laser Amplifier with Spectrum Broadening Techniques

报道了飞秒激光啁啾脉冲放大器中的激光脉冲光谱展宽技术 ,实验中使用了几种光谱展宽元件 ,结果表明使用激光光谱展宽元件能有效地将飞秒激光脉冲光谱展宽 ,抑制了飞秒激光放大器中常见的激光脉冲光谱增益窄化现象 ,从飞秒放大系统的振荡级输出 2 8fs种子脉冲 ,放大后得到了重复频率为 10Hz、峰值功率 1.6TW、脉冲宽度 37.

Several techniques of femtosecond pulse spectrum broadening in the chirped pulse amplifier of femtosecond laser are reported, and a few spectrum broadening elements are used. The results show that the spectrum of femtosecond pulse laser can be broadened effectively by using the laser spectrum broadening elements, and at some extent the spectrum gain narrowing effect of laser pulse can be effectively suppressed in the femtosecond laser amplifier. The seed pulse output of 28 fs is obtained from the oscillator in the femtosecond amplifying system. After amplification, an ultrashort ultra intensity laser pulse with the repetition rate 10 Hz, peak power 1.6 TW, pulsewidth 37.5 fs is achieved.