Methods for determining the optical constants of a thin plane–parallel slab are developed without using information from other measurements. For the ideal case (negligible absorption and thickness inhomogeneity), a purely geometrical method even avoids the use of relative intensities. The more realistic situations (weak absorption or gain and finite thickness inhomogeneity) are also discussed. The methods are used to determine the refractive index of CdS platelets below the exciton region at room temperature.
© 1980 Optical Society of America
Original Manuscript: August 22, 1979
Published: February 15, 1980
G. Jungk, "Determination of optical constants: the plane–parallel slab," Appl. Opt. 19, 508-516 (1980)