1. Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces
- Author
-
Wenqing Wei, Jie Zhang, Feng Liu, Xulei Ge, Yanqing Deng, Su Yang, Xiaohui Yuan, Yuan Fang, Guo-Bo Zhang, Jian Gao, Min Chen, and Zheng-Ming Sheng
- Subjects
QC717 ,Materials science ,business.industry ,media_common.quotation_subject ,Plasma ,Laser ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,010305 fluids & plasmas ,Electronic, Optical and Magnetic Materials ,law.invention ,Optics ,Physics::Plasma Physics ,law ,Harmonics ,Electric field ,0103 physical sciences ,Contrast (vision) ,High harmonic generation ,Irradiation ,Electrical and Electronic Engineering ,010306 general physics ,business ,Order of magnitude ,media_common - Abstract
The influence of laser temporal contrast on high-order harmonic generation from intense laser interactions with solid-density plasma surfaces is experimentally studied. A switchable plasma mirror system is set up to improve the contrast by two orders of magnitude at 10 ps prior to the main peak. By using the plasma mirror and tuning the prepulse, the dependence of high-order harmonic generation on laser contrast is investigated. Harmonics up to the 21st order via the mechanism of coherent wake emission are observed only when the targets are irradiated by high contrast laser pulses by applying the plasma mirror.
- Published
- 2017