基于Yb激光器的双级多通池压缩产生亚2周期太瓦级脉冲
Sub-2-Cycle, Terawatt Pulses via Double-Stage Multi-Pass Cell Compression of an Yb Laser
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中文总结 AI 辅助
本研究采用双级多通池压缩商用Yb:YAG激光脉冲，获得亚2周期、1.4TW峰值功率的脉冲，为少数周期千赫兹后压缩Yb激光系统的最高峰值功率，可用于激光尾场加速。
中文摘要 AI 辅助
我们报道了一种太瓦级、亚2周期的后压缩Yb基激光系统，其以千赫兹重复频率运行。一台商用Yb:YAG激光器输出1kHz重复频率、400fs脉宽、18mJ能量的脉冲，在包含充氩的Herriott型池和充氦的阵列型池的双级多通池装置中进行光谱展宽和时域压缩，总压缩倍数达65。最终压缩后的脉冲经测量，脉宽为6.2fs（1030nm波长下对应1.8个光学周期），能量为12.5mJ，对应有效峰值功率1.4TW。据我们所知，这是迄今为止报道的少数周期、千赫兹重复频率后压缩Yb激光系统的最高峰值功率。聚焦强度测量得到归一化矢量势a₀=3.0，证实该光源可用于激光尾场加速。
英文摘要
We report a terawatt-class, sub-2-cycle post-compressed Yb-based laser system operating at kHz repetition rate. 18 mJ, 400 fs pulses delivered at 1 kHz by a commercial Yb:YAG laser are spectrally broadened and temporally compressed in a double-stage multi-pass cell setup featuring an argon-filled Herriott-type cell followed by a helium-filled array-type cell, achieving an overall compression factor of 65. The resulting compressed pulses are measured to have 6.2 fs duration (1.8 optical cycles at 1030 nm) and 12.5 mJ energy, corresponding to 1.4 TW effective peak power. To the best of our knowledge, this constitutes the highest peak power reported to date for a few-cycle, kHz-repetition-rate, post-compressed Yb laser system. Focused intensity measurements yield a normalized vector potential of a0 = 3.0, confirming the applicability of this light source for laser wakefield acceleration.
发表机构
- Laboratoire d’Optique Appliquée (LOA), CNRS, Ecole polytechnique, ENSTA, Institut Polytechnique de Paris（应用光学实验室（LOA），法国国家科学研究中心，巴黎综合理工学院，ENSTA巴黎学院，巴黎理工学院）
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