Intensity distribution of the focal lines of the prepulse and mainpulse at the solid target surface

A. R. Praeg; Tomas Mocek; Bedrich Rus; Karel Rohlena

doi:10.1117/12.425558

23 April 2001 Intensity distribution of the focal lines of the prepulse and mainpulse at the solid target surface

A. R. Praeg, Tomas Mocek, Bedrich Rus, Karel Rohlena

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425558
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

Abstract

At the Prague Asterix Laser System (PALS) of the Academy of Sciences of Czech Republic the former Asterix IV iodine laser of the Max-Planck-Institut fur Quantenoptik is currently re-installed. For the soft x-ray laser experiments that will be performed in the near future a well defined focal line at the position of the target surface is important. Applying the prepulse technique there are two possibilities, either the main beam a d the prepulse beam are focused by the same focusing optics or the two different beams are focused by two optical systems separately. It is important to characterize the physical properties of the both line foci, i.e. their intensity distribution in two dimensions, since their energy ratio is giving only a mean value and not the actually existing non-uniformities along or across the focal line. By using two different focusing optics it is possible that the two lien foci do not have exactly the same width at full-width-half-maximum. In order to realize a well defined prepulse line focus it is important to measure the exact intensity distribution in two dimensions. We concept a method to obtain quantified 2D focal images and we present preliminary experimental results using a cylindrical lens array as well as using only a single cylindrical lens in combination with a spherical focusing lens.

Citation Download Citation

A. R. Praeg, Tomas Mocek, Bedrich Rus, and Karel Rohlena "Intensity distribution of the focal lines of the prepulse and mainpulse at the solid target surface", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425558

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KEYWORDS

Solids

Spherical lenses

X-ray lasers

Charge-coupled devices

Laser systems engineering

Continuous wave operation

Glasses

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