title: Design, optical characterization, and operation of large transmission gratings for the laser integration line and laser megajoule facilities.
abstract: Within the framework of the laser integration line (LIL) and the laser megajoule, we describe the design, optical characterization, mounting, alignment, and operation on the LIL of large 420 mm x 470 mm transmission gratings. Two types of grating were manufactured. The first, operating at a wavelength of 1.053 microm, was used for deviation purposes. The second, operating at a wavelength of 0.351 microm, was used for both deviation and focusing purposes. We demonstrate that these large transmission gratings are suitable for nanosecond-regime operation on high-power laser facilities.
authors.affiliation: Commissariat à l'Energie Atomique, Centre d'Etudes Scientifiques et Techniques d'Aquitaine, BP2, Le Barp, France. jerome.neauport@cea.fr
authors.forename: Jérôrme
authors.initials: J
authors.lastname: Néauport
authors.forename: Eric
authors.initials: E
authors.lastname: Journot
authors.forename: Gaël
authors.initials: G
authors.lastname: Gaborit
authors.forename: Philippe
authors.initials: P
authors.lastname: Bouchut