Theoretical model: transient temperature distribution in transmissive optical components for high-power laser beam trains

James R. Palmer

doi:10.1117/12.360048

27 August 1999 Theoretical model: transient temperature distribution in transmissive optical components for high-power laser beam trains

James R. Palmer

Author Affiliations +

Proceedings Volume 3737, Design and Engineering of Optical Systems II; (1999) https://doi.org/10.1117/12.360048
Event: Optical Systems Design and Production, 1999, Berlin, Germany

Abstract

In this paper, we will discuss the theoretical model that provides for the transient temperature distribution in all three orthogonal axis of a transmissive optic in a high power laser beam train. The mathematical transforms are set out for one, two and three dimensions for a time temperature history and the resulting optical deformation and subsequent loss of beam quality. The transforms will also provide maximum temperature rise, i.e., temperature differential, as a function of the laser power to allow for the transient thermal shock. Different optical materials are evaluated for providing trade-off of laser flux density, optical distortion and thermal shock. A great deal of pace is devoted to determining the temperature transient in an optic wherein the laser beam does not fill the whole aperture and the distortion arising from the different techniques of mounting.

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James R. Palmer "Theoretical model: transient temperature distribution in transmissive optical components for high-power laser beam trains", Proc. SPIE 3737, Design and Engineering of Optical Systems II, (27 August 1999); https://doi.org/10.1117/12.360048

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