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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 12 — Jun. 15, 2007
  • pp: 1749–1751

Tiled-grating compression of multiterawatt laser pulses

Arnaud Cotel, Caroline Crotti, Patrick Audebert, Catherine Le Bris, and Catherine Le Blanc  »View Author Affiliations

Optics Letters, Vol. 32, Issue 12, pp. 1749-1751 (2007)

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High-energy petawatt lasers require large diffraction gratings for pulse compression. As an alternative to meter-sized gratings, we demonstrate the capability of a tiled-grating system to compress multiterawatt subpicosecond laser pulses. Using a 100 TW -class Nd:glass chirped-pulse amplification laser facility, we report on the performance of a two-grating mosaic to compress high-energy pulses to 2.5 J , 450 fs ( 5.5 TW ) in air with a beam size of 50 mm and energy transmission of 63%. Stability of the grating mosaic alignment was realized by use of an accurate nanopositioning optomechanical system. The output Gaussian spectrum was preserved from grating-gap spectral clipping and was free of modulation.

© 2007 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 22, 2007
Manuscript Accepted: April 1, 2007
Published: June 8, 2007

Arnaud Cotel, Caroline Crotti, Patrick Audebert, Catherine Le Bris, and Catherine Le Blanc, "Tiled-grating compression of multiterawatt laser pulses," Opt. Lett. 32, 1749-1751 (2007)

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