Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces

Authors:
  • JGJian Gao
    Jian Gao
  • XGXulei Ge
    Xulei Ge
  • YDYanqing Deng
    Yanqing Deng
  • GZGuobo Zhang
    Guobo Zhang
  • YFYuan Fang
    Yuan Fang
  • WWWenqing Wei
    Wenqing Wei
  • SYSu Yang
    Su Yang
  • XYXiaohui Yuan
    Xiaohui Yuan
  • MCMin Chen
    Min Chen
  • ZSZhengming Sheng
    Zhengming Sheng
  • JZJie Zhang
    Jie Zhang
Publisher website
Google Scholar
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.<录用日期>2017-04-28<上网时间>2017-05-15