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Proceedings Paper

Design of diffraction gratings for multipetawatt laser compressors
Author(s): Nicolas Bonod; Jérôme Néauport
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Paper Abstract

A multipetawatt laser is in construction in France with a compressor scheme using diffraction gratings. With an original code which takes into account the imprecision range of the geometrical parameters during the fabrication process, we numerically optimize the mirror stack and study different groove profiles in order to reduce the electric field inside the solid materials. It is shown that among all the profiles which lead to good diffraction performances, the profiles with the highest groove depth and width values lead to the smallest enhancement of the electric field inside the solid materials with a decrease by a factor slightly higher than 2.5. Moreover, in view to reduce the mechanical constraints in the stack, an original setup using a metal insert between the substrate and the dielectric mirror is studied.

Paper Details

Date Published: 14 October 2005
PDF: 13 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59622M (14 October 2005); doi: 10.1117/12.625198
Show Author Affiliations
Nicolas Bonod, CEA Cesta (France)
Jérôme Néauport, CEA Cesta (France)

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

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