Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
Opt Lett. 2011 Aug 15;36(16):3194-6. doi: 10.1364/OL.36.003194.
Based on a combined scheme of doubled chirped-pulse amplification and a femtosecond noncollinear optical-parametric amplifier, a high-contrast femtosecond laser pulse with energy of up to 32.3 J has been generated by improving the gain efficiency and boosting the pump energy to 120 J in the final amplifier. Our measurements show that the contrast ratio of the main laser pulse is around 10(10) within the time scale of -400 ps and the duration of compressed pulse is 27.9 fs, corresponding to a peak power of 1.16 PW.
基于双啁啾脉冲放大和飞秒非共线光参量放大的组合方案，通过提高末级放大器的增益效率并将泵浦能量提升至 120 J，我们得到了能量高达 32.3 J 的高对比度飞秒激光脉冲。我们的测量结果表明，主激光脉冲的对比度比在 -400 ps 的时间范围内约为 10(10)，压缩脉冲的持续时间为 27.9 fs，对应的峰值功率为 1.16 PW。
