We report on the laser pulse output of 339 J centered at 800 nm from a chirped-pulse amplification (CPA) Ti:sapphire laser system at the Shanghai Superintense Ultrafast Laser Facility. The experimental results demonstrated that the parasitic lasing as well as the transverse amplified spontaneous emission of the homemade 235-mm-diameter Ti:sapphire final amplifier were suppressed successfully via the temporal dual-pulse pumped scheme and the index-matching liquid cladding technique. The maximum pump-to-signal conversion efficiency of 32.1% was measured for the final amplifier. With a compressor transmission efficiency of 64% and a compressed pulse duration of 21 fs obtained for the sample light at a lower energy level, this laser system could potentially generate a compressed laser pulse with a peak power of 10.3 PW. The experimental results represent significant progress with respect to the CPA laser.

中文翻译：

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用于10 PW激光设备的339 J高能Ti：蓝宝石chi脉冲放大器

我们报告了上海超高超快激光设备中a脉冲放大（CPA）Ti：蓝宝石激光系统输出的以800 nm为中心的339 J激光脉冲输出。实验结果表明，通过时间双脉冲泵浦方案和折射率匹配液体熔覆技术，可以成功抑制自制的235毫米直径Ti：蓝宝石最终放大器的寄生激光发射和横向放大的自发发射。最终放大器的最大泵浦信号转换效率为32.1％。对于较低能量水平的样品光，压缩器的传输效率为64％，压缩脉冲持续时间为21 fs，该激光系统可能会产生峰值功率为10.3 PW的压缩激光脉冲。