Optical Materials Characterization
Abstract
Windows subjected to high-averaged-power laser radiation will undergo optical and mechanical distortion due to absorptive heating. If the distortion becomes sufficiently severe, the windows become unusable. Theoretical calculations of optical distortion in laser windows depend on the following material parameters; absorption coefficient, refractive index, the thermo-optic constant (change of index with temperature), linear thermal expansion coefficient, stress-optical constants, elastic compliances, specific heat, thermal conductivity and density. Our program has been established to measure refractive indices, thermo-optic constants, piezo-optic constants, elastic compliances, and linear thermal expansion coefficients of candidate laser window materials.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1979
- Accession Number
- ADA065556
Entities
People
- Albert R. Feldman
- Deane Horowitz
- Marilyn J. Dodge
- Roy M. Waxler
Organizations
- National Institute of Standards and Technology