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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 crystals implemented in high power lasers. Single Point Diamond Turning is the only way to get the required transmitted wavefront and damage threshold, especially 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 used to optimize the fly-cutting process parameters on 100 X 100 mm2 KDP crystals.

Paper Details

Date Published: 6 September 1999
PDF: 7 pages
Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); doi: 10.1117/12.360170
Show Author Affiliations
Philippe Lahaye, SAGEM SA (France)
Christian Chomont, SAGEM SA (France)
Pierre Dumont, SAGEM SA (France)
Jacky Duchesne, CEA-Ctr. d'Etudes de Limeil-Valenton (France)
Genevieve Chabassier, CEA-Ctr. d'Etudes de Limeil-Valenton (France)

Published in SPIE Proceedings Vol. 3739:
Optical Fabrication and Testing
Roland Geyl; Jonathan Maxwell, Editor(s)

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