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 language | English |
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Pages (from-to) | 533-538 |
Number of pages | 6 |
Journal | Laser and Particle Beams |
Volume | 34 |
Issue number | 3 |
DOIs | |
State | Published - 2016 |
Bibliographical note
Publisher Copyright:© Cambridge University Press 2016.
Keywords
- Air plasma sparks
- Femtosecond laser
- X-rays