Using a design of experiment method to improve KDP crystal machining process

Philippe Lahaye; Christian Chomont; Pierre Dumont; Jacky Duchesne; Genevieve Chabassier

doi:10.1117/12.360170

6 September 1999 Using a design of experiment method to improve KDP crystal machining process

Philippe Lahaye, Christian Chomont, Pierre Dumont, Jacky Duchesne, Genevieve Chabassier

Proceedings Volume 3739, Optical Fabrication and Testing; (1999) https://doi.org/10.1117/12.360170
Event: Optical Systems Design and Production, 1999, Berlin, Germany

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.

Citation Download Citation

Philippe Lahaye, Christian Chomont, Pierre Dumont, Jacky Duchesne, and Genevieve Chabassier "Using a design of experiment method to improve KDP crystal machining process", Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); https://doi.org/10.1117/12.360170

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