The instrument described is a newly designed reflectometer. Measurements are made with a polarized light beam as a function of wavelength and angle of incidence. Calibration tests have outlined the possibility of using the instrument for reflectance measurements on mirrors with good reproducibility (0.2%) and accuracy (better than 1%). This has been obtained by the alignment system of the sample and the absolute method used for the determination of its reflectance.
© 1990 Optical Society of America
Carlo Castellini, Gabriele Emiliani, Enrico Masetti, Pasquale Poggi, and P. Pietro Polato, "Characterization and calibration of a variable-angle absolute reflectometer," Appl. Opt. 29, 538-543 (1990)