Abstract
The Space Dynamics Laboratory, under contract to the Missile Defense Agency, designed and built the optical coating characterization system (OCCS) cryogenic system for spectral (FTIR) measurement of optical transmittance and reflectance at temperatures of 90 K and higher. The OCCS is designed to make cryogenic transmittance measurements from normal up to a 50 degree angle-of-incidence, and reflectance measurements between 40 and 50 degrees angle-of-incidence, in a converging optical beam of F/2 or greater. The system can measure up to 20 1-inch diameter optical components in a single cold cycle, or fewer larger components with flat surfaces up to 3 inches in diameter. This presentation will provide a brief overview of the OCCS design, followed by test results showing the performance achieved during qualification measurements.
Optical Coating Characterization System (OCCS) Design and Qualification
The Space Dynamics Laboratory, under contract to the Missile Defense Agency, designed and built the optical coating characterization system (OCCS) cryogenic system for spectral (FTIR) measurement of optical transmittance and reflectance at temperatures of 90 K and higher. The OCCS is designed to make cryogenic transmittance measurements from normal up to a 50 degree angle-of-incidence, and reflectance measurements between 40 and 50 degrees angle-of-incidence, in a converging optical beam of F/2 or greater. The system can measure up to 20 1-inch diameter optical components in a single cold cycle, or fewer larger components with flat surfaces up to 3 inches in diameter. This presentation will provide a brief overview of the OCCS design, followed by test results showing the performance achieved during qualification measurements.