A simple polarizer-surface- analyzer (PSA) ellipsometer was assembled to measure reflection coefficients for coated and bare metal conical optical elements. Configuration and alignment problems unique to testing conical elements are described. The method fails to measure the retardance accurately when its value is near zero or r. Measurements are reported for several coated cones tested during a developmental coating program.
J. D. German,
T. R. Ferguson,
W. P. Latham,
"Polarizer-Surface-Analyzer (PSA) Ellipsometry Of Conical Elements," Optical Engineering 21(6), 216968 (1 December 1982). https://doi.org/10.1117/12.7973015