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 language | English |
---|---|
Article number | 081902 |
Number of pages | 4 |
Journal | Chinese Optics Letters |
Volume | 15 |
Issue number | 8 |
Early online date | 15 May 2017 |
DOIs | |
Publication status | Published - 10 Aug 2017 |
Keywords
- high-order harmonic generation
- solid-density plasma
- plasma mirror system
- laser contrast