1 MHz 重复率空心光纤脉冲压缩，在 100 W 平均功率下实现 100 fs 以下的脉宽。

1 MHz repetition rate hollow fiber pulse compression to sub-100-fs duration at 100 W average power.

机构信息

Institute of Applied Physics, Friedrich-Schiller-University Jena, Albert-Einstein-Strasse 15, 07745 Jena, Germany. jan.rothhardt@uni‐jena.de

出版信息

Opt Lett. 2011 Dec 1;36(23):4605-7. doi: 10.1364/OL.36.004605.

DOI:10.1364/OL.36.004605

PMID:22139257

Abstract

We report on nonlinear pulse compression at very high average power. A high-power fiber chirped pulse amplification system based on a novel large pitch photonic crystal fiber delivers 700 fs pulses with 200 μJ pulse energy at a 1 MHz repetition rate, resulting in 200 W of average power. Subsequent spectral broadening in a xenon-filled hollow-core fiber and pulse compression with chirped mirrors is employed for pulse shortening and peak power enhancement. For the first time, to our knowledge, more than 100 W of average power are transmitted through a noble-gas-filled hollow fiber. After pulse compression of 81 fs, 93 μJ pulses are obtained at a 1 MHz repetition rate.

摘要

我们报告了在非常高的平均功率下的非线性脉冲压缩。一个基于新型大芯区光子晶体光纤的高功率光纤啁啾脉冲放大系统，在 1 MHz 的重复率下输出 700 fs 的脉冲，具有 200 μJ 的脉冲能量，从而实现 200 W 的平均功率。随后，在充氙空心光纤中进行光谱展宽，并采用啁啾镜进行脉冲压缩，以实现脉冲缩短和峰值功率增强。据我们所知，这是首次在传输中通过填充有稀有气体的空心光纤传输超过 100 W 的平均功率。经过 81 fs 的脉冲压缩后，在 1 MHz 的重复率下获得了 93 μJ 的脉冲。