Dynamics of the critical surface in high-intensity laser-solid interactions: modulation of the XUV harmonic spectra |
| |
| Authors: | Watts I Zepf M Clark E L Tatarakis M Krushelnick K Dangor A E Allott R M Clarke R J Neely D Norreys P A |
| |
| Institution: | The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BZ, United Kingdom. |
| |
| Abstract: | The generation of harmonics from the interaction of an intense (I>or=10(18) W cm(-2)) laser with a solid surface is investigated. Modulation of the harmonic emission spectrum with a periodicity of 2 to 4 harmonics is observed at higher laser intensities. A similar modulation is predicted by a particle-in-cell simulation. The modulation is shown to be caused by the higher modes of oscillation of the critical surface during the interaction. As a result, the dynamics of the critical surface can be inferred from the shape of the harmonic spectrum. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
