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Proceedings Article

Utilizing ablation of solids to characterize a focused soft X-ray laser beam

[+] Author Affiliations
J. Chalupský

Institute of Physics (Czech Republic) and Czech Technical Univ. in Prague (Czech Republic)

L. Juha, V. Hájková, J. Cihelka, P. Homer, M. Kozlová, T. Mocek, J. Polan, B. Rus

Institute of Physics (Czech Republic)

J. Kuba

Czech Technical Univ. in Prague (Czech Republic)

J. Krzywinsky, R. Sobierajski

Institute of Physics (Poland)

H. Wabnitz, J. Feldhaus, K. Tiedtke

Deutsches Elektronen-Synchrotron (Germany)

And the

FLASH Peak Brightness Collaboration

Proc. SPIE 6586, Damage to VUV, EUV, and X-ray Optics, 65860S (May 18, 2007); doi:10.1117/12.724385
Text Size: A A A
From Conference Volume 6586

  • Damage to VUV, EUV, and X-ray Optics
  • Libor Juha; Ryszard H. Sobierajski; Hubertus Wabnitz
  • Prague, Czech Republic | April 16, 2007

abstract

An advanced time integrated method has been developed for soft X-ray pulsed laser beam characterization. A technique based on poly (methyl methacrylate) - PMMA laser induced ablation has been used for beam investigations of soft X-ray laser sources like FLASH (Free-electron LASer in Hamburg; formerly known as VUV FEL and/or TTF2 FEL) and plasma-based Ne-like Zn laser performed at PALS (Prague Asterix Laser System). For the interaction experiments reported here, the FLASH system provided ultra-short pulses (~10-fs) of 21.7-nm radiation. The PMMA ablation was also induced by plasma-based Ne-like Zn soft X-ray laser pumped by NIR beams at the PALS facility. This quasi-steady-state (QSS) soft X-ray laser provides 100-ps pulses of 21.2-nm radiation, i.e. at a wavelength very close to that of FLASH but with about 5,000 times longer pulses. In both cases, the PMMA samples were irradiated by a single shot with a focused beam under normal incidence conditions. Characteristics of ablated craters obtained with AFM (Atomic Force Microscope) and Nomarski microscopes were utilized for profile reconstruction and diameter determination of the focused laser beams ablating the PMMA surface.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

J. Chalupský ; L. Juha ; J. Kuba ; V. Hájková ; J. Cihelka, et al.
"Utilizing ablation of solids to characterize a focused soft X-ray laser beam", Proc. SPIE 6586, Damage to VUV, EUV, and X-ray Optics, 65860S (May 18, 2007); doi:10.1117/12.724385; http://dx.doi.org/10.1117/12.724385


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