Laser Compression via fast-extending plasma gratings
Abstract
It is proposed a new method of compressing laser pulse by fast extending plasma gratings(FEPG), which is created by ionizing the hypersound wave generated by stimulated Brillouin scattering(SBS) in the background gas. Ionized by a short laser pulse, the phonon forms a light-velocity FEPG to fully reflect a resonant pump laser. As the reflecting surface moves with a light velocity, the reflected pulse is temporally overlapped and compressed. This regime is supported by the simulation results of a fully kinetic particle-in-cell(PIC) code Opic with a laser wavelength of 1um, displaying a pump pulse is compressed from 13ps to a few cycles(7.2fs), with an efficiency close to 80%. It is a promising method to produce critical laser powers due to several features: high efficiency without a linear stage, robustness to plasma instabilities, no seed and a wide range of pump intensity.
Keywords
Cite
@article{arxiv.2103.03421,
title = {Laser Compression via fast-extending plasma gratings},
author = {Zhaohui Wu and Xiaoming Zeng and Zhaoli Li and Zhimeng Zhang and Xiaodong Wang and Bilong Hu and Xiao Wang and Jie Mu and Jingqin Su and Xiaofeng Wei and Yanlei Zuo},
journal= {arXiv preprint arXiv:2103.03421},
year = {2024}
}