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Proceedings Paper

Beam pattern and filling factor improvement for a Cassegrain three-pass amplifier using a new shape of optimized serrated apertures
Author(s): Thierry Bontoux; Taku Saiki; Tadashi Kanabe; Hisanori Fujita; Masahiro Nakatsuka
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Paper Abstract

The upgrade of the actual large laser facilities (GEKKO XII in our case) implies an increase of filling factor avoiding generation of high spatial-frequencies. To reach that purpose we intend to construct the beam using serrated aperture with optimized shape. The performances of our system lead after simulation to 70% filling factor with less than 2% fluctuation on laser pattern intensity map. As only a very few articles were written on that subject although it is not very new, this paper includes a theoretical approach of the serration effects. It presents mainly results from simulation and some experimental data.

Paper Details

Date Published: 8 December 1997
PDF: 9 pages
Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); doi: 10.1117/12.294287
Show Author Affiliations
Thierry Bontoux, Osaka Univ. (Japan)
Taku Saiki, Osaka Univ. (Japan)
Tadashi Kanabe, Osaka Univ. (Japan)
Hisanori Fujita, Osaka Univ. (Japan)
Masahiro Nakatsuka, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 3047:
Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference
Michel L. Andre, Editor(s)

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