Lincoln Laboratory, Massachusetts Institute of Technology, 244 Wood St, Lexington, Massachusetts 02420, USA.
Opt Lett. 2012 Jul 1;37(13):2700-2. doi: 10.1364/OL.37.002700.
We present a high-repetition-frequency, diode-pumped, and chirped-pulse amplification system operating at 106 W average output power with excellent beam quality (M(2)=1.3), based on cryogenically cooled Yb:YLF. 1 nJ seed pulses, derived from a mode-locked Ti:sapphire laser, are first amplified to 1 mJ pulse energy at 10 kHz repetition frequency in a regenerative amplifier. The second-stage, multipass amplifier increases the pulse energy to 10.6 mJ, resulting in a spectral width of 2.2 nm. The pulses are compressed to 865 fs in duration, which is 1.26 times the transform limit.
我们展示了一种基于深低温冷却 Yb:YLF 的高重复频率、二极管泵浦、啁啾脉冲放大系统，其平均输出功率为 106 W，光束质量优异（M(2)=1.3）。1 nJ 的种子脉冲来自锁模钛宝石激光器，首先在 10 kHz 重复频率的再生放大器中放大到 1 mJ 脉冲能量。第二级多通放大器将脉冲能量增加到 10.6 mJ，光谱宽度达到 2.2 nm。脉冲持续时间压缩到 865 fs，是变换极限的 1.26 倍。
