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Laser window materials — An overview

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Abstract

The laser window problem is reviewed with emphasis on failure mechanisms, absorption processes, and material evaluation. Failure by thermal fracture and by optical distortion is discussed and the material parameters needed to calculate figures of merit for these failure modes are tabulated for a variety of materials. The exponential dependence of absorption coefficient on wavenumber for intrinsic multi-phonon processes is discussed and its use in discriminating extrinsic from intrinsic absorption emphasized. Laser calorimeter absorption measurements at 10. 6 Μm and 5. 25 Μm are described and the measured values tabulated. The use of internal reflection spectroscopy to examine the effect of various surface treatments on

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This research was sponsored by the Advanced Research Projects Agency of the Department of Defense under ARPA Order 1180 and was monitored by the U.S. Army Missile Command under Contract No. DAAH01-72-C-0194. Views and conclusions expressed herein are the primary responsibility of the author or the contractor and should not be interpreted as representing the official opinion or policy of USAMICOM, ARPA, DOD or any other agency of the Government.

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Deutsch, T.F. Laser window materials — An overview. J. Electron. Mater. 4, 663–719 (1975). https://doi.org/10.1007/BF02661168

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  • DOI: https://doi.org/10.1007/BF02661168

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