Accession Number : AD0801462

Title :   NONRADIATIVE PROCESSES IN OPTICAL MASER MATERIALS.

Descriptive Note : Progress rept. no. 3, 1 Apr-30 Sep 66,

Corporate Author : RCA LABS PRINCETON NJ

Personal Author(s) : Kiss, Zoltan J. ; Bosomworth, Douglas R. ; Zernik, Wolfgang

Report Date : OCT 1966

Pagination or Media Count : 49

Abstract : The far-infrared lattice absorption studies of CaF2, SrF2, BaF2, and CDF2 have been completed. The temperature dependence of the transverse optic vibration frequencies for the above lattices has been deduced and related to the temperature-dependent microwave dielectric constant. A quantum mechanical derivation of the optical properties in the harmonic approximation is given. The most reasonable procedure for the phenomenological treatment of damping effects is described. The physical origin of damping effects is discussed and it is shown how the perturbation theoretical results may be simplified in the low-frequency limit. Damping functions for the above materials are given as a function of frequency and temperature. (Author)

Descriptors :   (*LASERS, FLUORIDES), (*INFRARED RADIATION, ABSORPTION), CALCIUM COMPOUNDS, STRONTIUM COMPOUNDS, BARIUM COMPOUNDS, CADMIUM COMPOUNDS, PHONONS, CRYSTAL LATTICES, DIELECTRIC PROPERTIES, OPTICAL PROPERTIES.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE