Temporal and spatial effects inside a compact and CEP stabilized, few-cycle OPCPA system at high repetition rates.
Temporal and spatial effects inside a compact and CEP stabilized, few-cycle OPCPA system at high repetition rates.
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DOI：
10.1364/oe.21.029656
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发表时间：
2013-12
期刊：
影响因子：
3.8
通讯作者：
J. Matyschok;T. Lang;T. Binhammer;O. Prochnow;S. Rausch;M. Schultze;A. Harth;P. Rudawski;C. Arnold;A. L’Huillier;U. Morgner
中科院分区：
文献类型：
--
作者：
J. Matyschok;T. Lang;T. Binhammer;O. Prochnow;S. Rausch;M. Schultze;A. Harth;P. Rudawski;C. Arnold;A. L’Huillier;U. Morgner
提出了一种结构紧凑、超稳定的少周期OPCPA系统。在两个非共线参数放大阶段，脉冲能量高达17µJ， 200 kHz重复频率。利用啁啾反射镜将宽带脉冲再压缩至6.3 fs，峰值功率超过800 MW。采用（2 + 1）维数值模拟对参数放大过程进行了详细研究，并在光谱形状、脉冲能量、空间效应以及与延迟相关的非线性混合产物等方面与实验观测结果进行了比较。这为高重复率OPCPA系统的参数化过程和设计指南提供了新的见解。
We present a compact and ultra-stable few-cycle OPCPA system. In two non-collinear parametric amplification stages pulse energies up to 17 µJ at 200 kHz repetition rate are obtained. Recompression of the broadband pulses down to 6.3 fs is performed with chirped mirrors leading to peak powers above 800 MW. The parametric amplification processes were studied in detail employing (2 + 1) dimensional numerical simulations and compared to experimental observations in terms of spectral shapes, pulse energy, spatial effects as well as delay dependent nonlinear mixing products. This gives new insights into the parametric process and design guidelines for high repetition rate OPCPA systems.