超连续谱种子兆赫兹重复频率光学参量啁啾脉冲放大器的功率缩放

Power scaling of supercontinuum seeded megahertz-repetition rate optical parametric chirped pulse amplifiers.

作者信息

Riedel R, Stephanides A, Prandolini M J, Gronloh B, Jungbluth B, Mans T, Tavella F

出版信息

Opt Lett. 2014 Mar 15;39(6):1422-4. doi: 10.1364/OL.39.001422.

DOI:10.1364/OL.39.001422

Abstract

Optical parametric chirped-pulse amplifiers with high average power are possible with novel high-power Yb:YAG amplifiers with kW-level output powers. We demonstrate a compact wavelength-tunable sub-30-fs amplifier with 11.4 W average power with 20.7% pump-to-signal conversion efficiency. For parametric amplification, a beta-barium borate crystal is pumped by a 140 W, 1 ps Yb:YAG InnoSlab amplifier at 3.25 MHz repetition rate. The broadband seed is generated via supercontinuum generation in a YAG crystal.

摘要

采用具有千瓦级输出功率的新型高功率镱钇铝石榴石（Yb:YAG）放大器，有望实现高平均功率的光学参量啁啾脉冲放大器。我们展示了一种紧凑的波长可调谐亚30飞秒放大器，其平均功率为11.4瓦，泵浦到信号的转换效率为20.7%。对于参量放大，一块β-硼酸钡晶体由一台140瓦、1皮秒的Yb:YAG集成薄片放大器以3.25兆赫的重复频率泵浦。宽带种子光通过YAG晶体中的超连续谱产生。