Accession Number:

AD0777844

Title:

Mathematical Modeling of Effect of Material Parameters on IR Laser Windows.

Descriptive Note:

Final rept. 1 Mar 71-28 Feb 74,

Corporate Author:

PARKE MATHEMATICAL LABS INC CARLISLE MASS

Personal Author(s):

• Parke,Nathan Grier , III

Report Date:

1974-02-01

Pagination or Media Count:

29.0

Abstract:

A brief but complete summary in narrative form of the mathematical modeling done under the contract, including references to and descriptions of the papers and reports issued. The main areas of work have been temperature stress in surface cooling of window materials, the algorithmic problems involved in the theory of multiphonon absorption in crystals, and the generalization of a new solution to the transport equation to encompass the Markovian anisotropic scattering of electrons in thin films. The solution of the equation for heat conduction in cylinders by the implicit alternating difference method is applied to the production of input data for thermal lensing problems and to a new method of obtaining the bulk absorption coefficient from calorimetric measurements. Author

Descriptors:

• *INFRARED WINDOWS
• *INFRARED LASERS
• MATHEMATICAL MODELS
• THERMAL STRESSES
• COOLING
• HEATING
• THIN FILMS
• ELECTRON SCATTERING
• SORPTION
• FOURIER TRANSFORMATION

Subject Categories:

• Lasers and Masers
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE