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系统研究了利用充惰性气体的250μm内径的空心光纤(HCF)展宽光谱和啁啾镜补偿色散的高能量周期量级脉冲压缩技术。基于此技术,研究了入射激光脉冲能量和腔内惰性气体气压对于压缩后脉冲宽度和输出能量的影响。将钛宝石激光器输出的脉冲宽度40 fs,单脉冲能量2.7 mJ,重复频率1 kHz,中心波长在800 nm的激光脉冲输入压缩系统,获得了脉冲宽度7 fs,单脉冲能量大于1 mJ,中心波长为750 nm的稳定周期量级激光脉冲。
A high energy cycle pulse compression technique using hollow fiber (HCF) broadening spectrum of 250μm ID and inert gas chirped mirror to compensate for dispersion has been systematically studied. Based on this technique, the effects of the incident laser pulse energy and the inert gas pressure in the cavity on the pulse width after compression and the output energy were studied. The pulse width of 40 fs, single pulse energy of 2.7 mJ, repetition rate of 1 kHz and center wavelength of 800 nm were input into the compression system. The pulse width was 7 fs and the single pulse energy was more than 1 mJ. The center wavelength 750 nm stable period laser pulse.