Stark Henning, Buldt Joachim, Müller Michael, Klenke Arno, Limpert Jens
Opt Lett. 2021 Mar 1;46(5):969-972. doi: 10.1364/OL.417032.
An ultrafast fiber chirped-pulse amplification laser system based on a coherent combination of 16 ytterbium-doped rod-type amplifiers is presented. It generates 10 mJ pulse energy at 1 kW average power and 120 fs pulse duration. A partially helium-protected, two-staged chirped-pulse amplification grating compressor is implemented to maintain the close to diffraction-limited beam quality by avoiding nonlinear absorption in air.
介绍了一种基于16个掺镱棒状放大器相干合成的超快光纤啁啾脉冲放大激光系统。它在平均功率1kW和脉冲持续时间120fs的条件下产生10mJ的脉冲能量。采用部分氦气保护的两级啁啾脉冲放大光栅压缩器，通过避免空气中的非线性吸收来保持接近衍射极限的光束质量。
