CAJ | 학술논문

采用环形再生腔结构的啁啾脉冲放大技术方案,在重复频率100 Hz,单脉冲能量33.1 mJ的532 nm激光抽运下,从钛宝石激光中获得了单脉冲能量9.84 mJ的放大输出,对应的斜效率达33.1%.在重复频率10 Hz的情况下,同样获得了单脉冲能量为9.64 mJ,对应斜效率达36.8%的高效率放大结果.通过色散补偿压缩该啁啾激光脉冲后的单脉冲能量为6.36 mJ,脉冲宽度为59.7 fs.测量结果表明典型的能量不稳定度为1.85%.
채용배형재생강결구적조추맥충방대기술방안,재중복빈솔100 Hz,단맥충능량33.1 mJ적532 nm격광추운하,종태보석격광중획득료단맥충능량9.84 mJ적방대수출,대응적사효솔체33.1%.재중복빈솔10 Hz적정황하,동양획득료단맥충능량위9.64 mJ,대응사효솔체36.8%적고효솔방대결과.통과색산보상압축해조추격광맥충후적단맥충능량위6.36 mJ,맥충관도위59.7 fs.측량결과표명전형적능량불은정도위1.85%.
@@@@Based on chirped-pulse amplification technology, a ring cavity Ti:sapphire regenerative amplifier with high output energy is demonstrated. Under the 532 nm pump energy of 33.1 mJ at a repetition rate of 100 Hz, the chirped laser pulse with energy of 9.84 mJ is obtained, corresponding to a slope efficiency of 33.1%. Instead, using the pump laser with energy of 32.0 mJ at a repetition rate of 10 Hz, we also obtain 9.64 mJ pulse energy with a corresponding slope efficiency of 36.8%. By optimizing the dispersion among all optical materials, stretcher and compressor, the shortest pulse has an energy of 6.36 mJ and a pulse width of 59.7 fs, and the energy fluctuation is 1.85%(RMS) over 4000 shots after the compressor. The performances show that it may pave the way for ultrafast applications and serves as a front stage toward TW even PW laser system with high contrast ratio.