Chichkov Nikolai B, Bünting Udo, Wandt Dieter, Morgner Uwe, Neumann Jörg, Kracht Dietmar
Laser Zentrum Hannover e.V., Hollerinthallee 8, 30419 Hannover, Germany.
Opt Express. 2009 Dec 21;17(26):24075-83. doi: 10.1364/OE.17.024075.
A novel CPA-system with a spatially dispersive Yb:KYW-based regenerative amplifier is presented. Three prisms inside the amplifier divide the seed pulses from an Yb fiber laser system into spatially separated spectral components that pass through different volumes of the active medium and are amplified independently. This concept allows overcoming the effect of gain-narrowing. The spatially dispersive amplifier delivers laser pulses with energies of up to 30 microJ at a repetition rate of 100 kHz. Successful compression of the amplified pulses down to 171 fs is demonstrated.
提出了一种基于空间色散Yb:KYW的再生放大器的新型CPA系统。放大器内部的三个棱镜将来自Yb光纤激光系统的种子脉冲分成空间上分离的光谱成分,这些成分穿过不同体积的激活介质并被独立放大。这一概念有助于克服增益窄化效应。该空间色散放大器能以100 kHz的重复频率输出能量高达30微焦的激光脉冲。实验证明了放大后的脉冲能成功压缩至171飞秒。