基于多程池的非线性脉冲压缩，在脉冲能量为7.5 μJ、平均功率为300 W时可压缩至115 fs。

Multi-pass-cell-based nonlinear pulse compression to 115 fs at 7.5 µJ pulse energy and 300 W average power.

作者信息

Weitenberg Johannes, Vernaleken Andreas, Schulte Jan, Ozawa Akira, Sartorius Thomas, Pervak Vladimir, Hoffmann Hans-Dieter, Udem Thomas, Russbüldt Peter, Hänsch Theodor W

出版信息

Opt Express. 2017 Aug 21;25(17):20502-20510. doi: 10.1364/OE.25.020502.

DOI:10.1364/OE.25.020502

PMID:29041730

Abstract

We demonstrate nonlinear pulse compression by multi-pass cell spectral broadening (MPCSB) from 860 fs to 115 fs with compressed pulse energy of 7.5 µJ, average power of 300 W and close to diffraction-limited beam quality. The transmission of the compression unit is >90%. The results show that this recently introduced compression scheme for peak powers above the threshold for catastrophic self-focusing can be scaled to smaller pulse energies and can achieve a larger compression factor than previously reported. Good homogeneity of the spectral broadening across the beam profile is verified, which distinguishes MPCSB among other bulk compression schemes.

摘要

我们通过多程池光谱展宽（MPCSB）实现了非线性脉冲压缩，脉冲从860飞秒压缩至115飞秒，压缩后脉冲能量为7.5微焦，平均功率为300瓦，且光束质量接近衍射极限。压缩单元的透射率大于90%。结果表明，这种最近引入的用于峰值功率高于灾难性自聚焦阈值的压缩方案可以扩展到更小的脉冲能量，并且能够实现比先前报道更大的压缩因子。验证了光束轮廓上光谱展宽的良好均匀性，这使多程池光谱展宽在其他体压缩方案中脱颖而出。