Noble gas clusters and nanoplasmas in high harmonic generation

[摘要] We report a study of high harmonic generation from noble gas clusters of xenon atoms in a gas jet. Harmonic spectra were investigated as a function of backing pressure, showing spectral shifts due to the nanoplasma electrons in the clusters. At certain value of laser intensity this process may oppose the effect of the well-known ionization-induced blueshift. In addition, these cluster-induced harmonic redshifts may give the possibility to estimate cluster density and cluster size in the laser-gas jet interaction range. (C) 2015 Elsevier B.V. All rights reserved.

[发布日期] 2016-02-15

[效力级别]  Proceedings Paper

[关键词] High harmonic generation;Cluster;Nanoplasma