钕玻璃啁啾脉冲放大器产生百焦耳亚皮秒脉冲

Generation of 100-J sub-picosecond laser pulse in high energy Nd:glass chirped pulse amplification system

以钕玻璃为增益介质研制了高能啁啾脉冲激光放大器系统,实验演示输出啁啾脉冲能量在百焦耳量级时,光谱宽度保持在4—6nm.最大能量168J,相应谱宽5.5nm,中心波长1054nm.压缩脉冲宽度最短710fs.

Generation of high energy sub-picosecond laser pulse was demonstrated in the Nd：glass chirped pulse amplification system. Seeded with pulse originating from OPA front end, the laser system output chirped pulse with maximum energy up to 168 J, and the spectral width was 5.5 nm （FWHM）, centering at 1054 nm. Systematic investigation showed the spectral width of pulses was about 4—6 nm with energy higher than 100 J, which supports high energy laser pulse with pulse duration less than 300 fs. The final pulse was compressed to as short as 710 fs by a mosaic grating compressor.