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Proceedings Paper

Alignment of a multigrating mosaic compressor in a PW-class CPA-laser
Author(s): M. Hornung; R. Bödefeld; M. Siebold; S. Podleska; M. Schnepp; J. Hein; R. Sauerbrey
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Paper Abstract

The coherent adding (tiling) of gratings is a promising alternative to large single gratings for highest-power CPA lasers. However, in order to obtain both temporally and spatially undistorted beam profiles it is necessary to align the mosaic gratings accurately to less than λ/20 with respect to one another. This paper is aimed at a thorough description of the alignment procedure, which uses both spatial and temporal properties of the laser beam to detect grating misalignments. The main emphasis lies within the analysis of the k-space, which becomes accessible by focussing the compressed laser-pulse or a monochromatic alignment laser, respectively. We present the effect of grating misalignments on both focal area and near field by propagating continuous-wave, monochromatic laser light through a misaligned tiled grating compressor.

Paper Details

Date Published: 14 October 2005
PDF: 10 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59622K (14 October 2005); doi: 10.1117/12.624806
Show Author Affiliations
M. Hornung, Friedrich-Schiller-Univ. (Germany)
R. Bödefeld, Friedrich-Schiller-Univ. (Germany)
M. Siebold, Friedrich-Schiller-Univ. (Germany)
S. Podleska, Friedrich-Schiller-Univ. (Germany)
M. Schnepp, Friedrich-Schiller-Univ. (Germany)
J. Hein, Friedrich-Schiller-Univ. (Germany)
R. Sauerbrey, Friedrich-Schiller-Univ. (Germany)

Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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