High Energy Laser Windows
Abstract
The goal of this program is to reduce the absorption, and improve the mechanical properties, of alkali halides for laser window use. During this reporting period, a number of important results in infrared absorption have been achieved: (1) Nearly intrinsic bulk absorption has been found at 10.6 micrometers in chemically polished KCl crystals which were grown in a reactive atmosphere; (2) Intrinsic and extrinsic absorption in KCl has been distinguished by studies of its temperature dependence; (3) A 9.8 micrometers surface impurity band in KCl has been detected by laser calorimetry; and, (4) Frequency and temperature dependence of absorption at wavelengths < 10.6 micrometers has been studied with the spectral emittance studies at NELC.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1973
- Accession Number
- AD0774701
Entities
People
- R. W. Rice
Organizations
- United States Naval Research Laboratory