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

Jian Gao, Feng Liu, Xulei Ge, Yanqing Deng, Guobo Zhang, Yuan Fang, Wenqing Wei, Su Yang, Xiaohui Yuan, Min Chen, Zhengming Sheng, Jie Zhang

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Article number081902
Number of pages4
JournalChinese Optics Letters
Volume15
Issue number8
Early online date15 May 2017
DOIs
Publication statusPublished - 10 Aug 2017

Keywords

  • high-order harmonic generation
  • solid-density plasma
  • plasma mirror system
  • laser contrast

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