Characterization of X-ray radiation from solid Sn target irradiated by femtosecond laser pulses in the presence of air plasma sparks

A. Curcio*, M. Anania, F. G. Bisesto, A. Faenov, M. Ferrario, M. Galletti, D. Giulietti, R. Kodama, M. Petrarca, T. Pikuz, A. Zigler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The emission of X-rays from solid tin targets irradiated by low-energy (few mJ) femtosecond laser pulses propagated through air plasma sparks is investigated. The aim is that to better understand the X-ray emission mechanism and to show the possibility to produce proper radiation for spectroscopic and imaging applications with a table-top laser system. The utilization of a controlled ultrashort prepulse is found necessary to optimize the conversion efficiency of laser energy into L α radiation. The optimum contrast between the main pulse and the controlled prepulse is found about 102. A correlation between the laser contrast value and the laser near-infrared spectra at the exit of the plasma spark is observed.

Original languageEnglish
Pages (from-to)533-538
Number of pages6
JournalLaser and Particle Beams
Volume34
Issue number3
DOIs
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© Cambridge University Press 2016.

Keywords

  • Air plasma sparks
  • Femtosecond laser
  • X-rays

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