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Proceedings Paper

Large Laser Windows From Czochralski-Grown NaCl
Author(s): O. H. Nestor; D. A. Hammond; G. Bastien
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Paper Abstract

A research program to improve large NaC1 crystal growth for CO2 laser window production is described. The program entails growth by the Czochralski technique, permitting control of crystal orientation and crystallographic integrity and relaxing the demand on purity of starting materials. A facility for producing crystals up to 20 inch diameter and 200 Lb. mass has been developed. Several 18 inch diameter windows have been produced from these after hot-forging to a fine-grain polycrystalline structure for strength. The crystals contain scattered, faceted microbubbles that convert to donut-shaped inclusions on forging. The program continues toward perfecting the new approach.

Paper Details

Date Published: 13 November 1980
PDF: 4 pages
Proc. SPIE 0190, Los Alamos Conference on Optics 1979, (13 November 1980); doi: 10.1117/12.957733
Show Author Affiliations
O. H. Nestor, The Harshaw Chemical Company (United States)
D. A. Hammond, The Harshaw Chemical Company (United States)
G. Bastien, The Harshaw Chemical Company (United States)

Published in SPIE Proceedings Vol. 0190:
Los Alamos Conference on Optics 1979
Donald H. Liebenberg, Editor(s)

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