Accession Number : AD0435012


Title :   OPTICAL CONSTANTS OF GERMANIUM


Corporate Author : MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY


Personal Author(s) : Wolfe, W L ; Jenney, J A ; Levengood, W C ; Limperis, T ; Szeles, D M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/435012.pdf


Report Date : Mar 1964


Pagination or Media Count : 41


Abstract : An analysis has been made of the effects of change of refractive index of germanium on radiometric calibration; this analysis shows that the index cannot change by more than 0.01 if 2% accuracy is to be maintained-unless calibration procedures are used to account for this change. Several methods of measuring index have been investigated; as a necessary preliminary, the effects of changes in temperature and pressure on index were evaluated. For the usual atmospheric conditions, variations of 50 C or 50 torr will cause changes of no more than =0.00001 of the refractive index of air. Each of nine possible techniques has been analyzed in terms of the precision necessary in the measurement of each of the independent variables. Deviation techniques are discussed. The required measurement accuracies for summarized. Transmission measurements made on a sample submitted by the sponsor are also described and analyzed.


Descriptors :   *GERMANIUM , OPTICAL PROPERTIES , TEMPERATURE , MECHANICAL PROPERTIES , REFRACTIVE INDEX , SPHERES , INTERFEROMETERS , ARTIFICIAL SATELLITES , SAMPLING , PRESSURE , CALIBRATION , RADIOMETERS , MEASUREMENT , ERRORS


Subject Categories : Inorganic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE