1千赫兹重复频率下的1.5毫焦、6.4飞秒参量啁啾脉冲放大系统。

1.5 mJ, 6.4 fs parametric chirped-pulse amplification system at 1 kHz.

作者信息

Adachi S, Ishii H, Kanai T, Ishii N, Kosuge A, Watanabe S

机构信息

Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan.

出版信息

Opt Lett. 2007 Sep 1;32(17):2487-9. doi: 10.1364/ol.32.002487.

DOI:10.1364/ol.32.002487

PMID:17767280

Abstract

We demonstrate an optical parametric chirped-pulse amplification (OPCPA) system with the pulse energy of 1.5 mJ at a 1 kHz repetition rate. The newly developed 100 ps Ti:sapphire pump laser system, which was optically synchronized with OPCPA seed pulses, delivered 10 mJ, 400 nm pump pulses. After three-stage parametric amplification, recompression of the amplifier output from 45 ps to 6.4 fs was performed. The pulse width of 6.4 fs is, to our knowledge, the shortest ever obtained by OPCPA, and the average power of 1.5 W (1.5 mJ, 1 kHz) is believed to be the highest among few-cycle OPCPA systems.

摘要

我们展示了一种光学参量啁啾脉冲放大（OPCPA）系统，其在1 kHz重复频率下的脉冲能量为1.5 mJ。新开发的100 ps钛宝石泵浦激光系统与OPCPA种子脉冲实现了光学同步，输出能量为10 mJ、波长为400 nm的泵浦脉冲。经过三级参量放大后，将放大器输出从45 ps重新压缩至6.4 fs。据我们所知，6.4 fs的脉冲宽度是通过OPCPA获得的最短脉冲宽度，并且1.5 W（1.5 mJ，1 kHz）的平均功率被认为是少周期OPCPA系统中最高的。