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Proceedings Paper

Development of soft x-ray lasers at PALS
Author(s): Bedrich Rus; Michaela Kozlova; Jiri Polan; Ansgar R. Praeg; Michal Stupka; T. Mocek
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Paper Abstract

Program of development of deeply saturated Ne-like zinc soft X-ray laser at the PALS (Prague Asterix Laser System) Centre, employing as a pump device a kilojoule high-power iodine laser, is reviewed. The active medium giving rise to laser action at 21.2 nm is generated using a sequence of multiple-100-ns IR pump pulses, consisting of a weak prepulse (<10J), followed after 10 or 50 ns by the main pump pulse (~500 J). The population inversion in the resulting long scale-length density plasma allows to generate an extremely bright and narrowly collimated X-ray laser beam, providing up to ~10 mJ pulses and ~100 MW of peak power, which is the most powerful soft X-ray laser yet implemented. This device was recently used as radiation source in pilot radiobiology study of DNA damage in the soft X-ray region, and in material ablation. A novel interferometric device, based on double Lloyd's mirror, is being developed for surface nanometric probing with teh soft X-ray laser as a source. A test experiment was performed to assess focusing properties of the X-ray laser beam down to a narrow spot, with the ultimate goal of achieving 1013 Wcm-2 for novel applications relevant to e.g. laboratory astrophysics.

Paper Details

Date Published: 23 March 2005
PDF: 6 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611203
Show Author Affiliations
Bedrich Rus, Institute of Physics (Czech Republic)
Michaela Kozlova, Institute of Physics (Czech Republic)
Jiri Polan, Institute of Physics (Czech Republic)
Ansgar R. Praeg, Institute of Physics (Czech Republic)
Michal Stupka, Institute of Physics (Czech Republic)
T. Mocek, Institute of Physics (Czech Republic)

Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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