Noble gas clusters and nanoplasmas in high harmonic generation

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 oppos...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2016-02, Vol.369, p.68-71
Main Authors: Aladi, M., Bolla, R., Rácz, P., Földes, I.B.
Format: Article
Language:English
Subjects:
Backing
Cluster
Clusters
Density
Harmonic generations
Harmonics
High harmonic generation
Lasers
Nanoplasma
Nanostructure
Spectra
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Summary: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.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2015.10.061