The Air Force Weapons Laboratory Laser Window Test Apparatus.
Abstract
The Laser Window Test Apparatus (LWTA) evaluates windows and other optical components for high-power infrared laser systems. Specimens are probed with narrow beams from low-power lasers (currently CO2 lasers) to determine their optical characteristics at incidence angles between 2 and 76 degrees from the normal. The instrument includes a photometer that uses digitized ratiometric detection for measuring single-pass transmittance and single-pass reflectance; an interferometer for measuring the optical pathlength through specimens; a rastering machine for moving the specimens in relation to the probing beams; and a minicomputer controls measurements, performs on-line calibrations, computes running statistical records of the acquired data, and generates an output tape of all data for use by a CDC-6600 computer program which generates the data in its final form and accuracy. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1974
- Accession Number
- AD0783852
Entities
People
- D. D. Preonas
- D. G. Peterson Jr
- P. W. Dueweke
Organizations
- University of Dayton Research Institute