论文标题
基于单通行的单粒型主要压缩机的多步脉冲压缩机
Multistep pulse compressor based on single-pass single-grating-pair main compressor
论文作者
论文摘要
提出了基于单通行的单晶粒对（SSGP）主压缩机的多阶段平滑多步脉冲压缩机（MPC），以简化整个PETAWATT（PW）压缩机。与四颗粒主压缩机相比，仅使用一个具有相对较长距离的光栅对在主压缩机中产生相同数量的光谱分散体。随着SSGP诱导最大的空间色散，它可以在最后一个光栅上引入激光束的最佳光束光滑效果。当仅考虑两个光栅的衍射损失时，SSGP主压缩机的总压缩效率甚至大于四颗粒主压缩机的压缩效率。此外，通过使用可变形的镜子可以有效地补偿由单个颗粒对诱导的时空畸变，但是在四颗粒压缩机中得到充分补偿是困难或复杂的。使用单个激光束的基于SSGP的多阶段平滑MPC可以获得大约50-100 PW激光脉冲
A multistage smoothing multistep pulse compressor (MPC) based on a single-pass single-grating-pair (SSGP) main compressor is proposed to simplify the entire petawatt (PW) compressor. Only one grating pair with relatively long distance is used to generate the same amount of spectral dispersion in the main compressor compared with a four-grating main compressor. As the SSGP induces the largest spatial dispersion, it can introduce the best beam-smoothing effect to the laser beam on the last grating. When considering the diffraction loss of only two gratings, the total compression efficiency of the SSGP main compressor is even larger than that of a four-grating main compressor. Furthermore, the spatiotemporal aberration induced by single-grating-pair can be compensated effectively by using deformable mirrors, however it is difficult or complicated to be well compensated in a four-grating compressor. Approximately 50-100 PW laser pulses can be obtained using this SSGP-based multistage smoothing MPC with a single laser beam
