Accession Number : AD0471653


Title :   INFRARED COATING STUDIES.


Descriptive Note : Quarterly rept. no. 9, 14 Jun-14 Sep 65,


Corporate Author : BAUSCH AND LOMB INC ROCHESTER NY RESEARCH AND DEVELOPMENT DIV


Personal Author(s) : Chang, L


Report Date : 14 Sep 1965


Pagination or Media Count : 21


Abstract : In order to clarify the ambiguity of the refractive indices of some of the filming materials used in the previous reports, efforts were made in this quarter to determine the refractive indices of PbCl2, ZnTe and ZnS films. A computing program was written to calculate film indices as a function of substrate index and the measured quarterwave reflectance or transmittance. From the spectrophotometric measurement of the film-substrate combination, the film index is easily determined as the substrate back surface reflection and is taken into consideration by the computations. Also presented in this report is a collection of the reststrahlen reflectance measurements of three minerals (wulfenite, scheelite, and topaz) and several crystalline samples (SiC, CdS, DdSe, GaP and GaAs). (Author)


Descriptors :   INFRARED OPTICAL MATERIALS , OPTICAL COATINGS , REFRACTIVE INDEX , LEAD COMPOUNDS , CHLORIDES , ZINC COMPOUNDS , TELLURIDES , SULFATES , GEMS(MINERALS) , MOLYBDATES , CALCIUM COMPOUNDS , TUNGSTATES , INFRARED RADIATION , REFLECTION , SORPTION , EMISSIVITY , ALUMINUM COMPOUNDS , FLUORINE COMPOUNDS , SILICATES


Distribution Statement : APPROVED FOR PUBLIC RELEASE