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.

No abstract

No abstract

We present the fmal optics design of the Megajoule Laser (LMJ) using high efficiency transmission gratings at 1053nm and 35mm for broadband tripling, wavelength filtering, laser diagnostics sampling and focusing on target. We also present a 1 :3 scale prototype of our optical system and we summarize the experimental results obtained during the year of 1998.

No abstract

No abstract

No abstract

No abstract