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Proceedings Paper

Using a design of experiment method to improve KDP crystal machining process
Author(s): Philippe Lahaye; Christian Chomont; Pierre Dumont; Jacky Duchesne; Genevieve Chabassier
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Paper Abstract

Surface quality is an important issue for KDP crystal implemented in high power lasers. Single Point Diamond Turning is the only way to get the required transmitted wavefront and damage threshold, specially in the UV band of the laser Megajoule. The aim of the process development was to reach an rms roughness lower than 3 nm using a vertical fly-cutter, an appropriate cleaning equipment and an interferometric microscope for measurements. A Taguchi Design of Experiment method has been sued to optimize the fly-cutting process parameters on 100 X 100 mm2 KDP crystals.

Paper Details

Date Published: 23 July 1999
PDF: 7 pages
Proc. SPIE 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, (23 July 1999); doi: 10.1117/12.354197
Show Author Affiliations
Philippe Lahaye, SAGEM SA (France)
Christian Chomont, SAGEM SA (France)
Pierre Dumont, SAGEM SA (France)
Jacky Duchesne, Ctr. d'Etudes de Limeil-Valenton/CEA (France)
Genevieve Chabassier, Ctr. d'Etudes de Limeil-Valenton/CEA (France)


Published in SPIE Proceedings Vol. 3492:
Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion
W. Howard Lowdermilk, Editor(s)

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