Accession Number : ADA295458

Title :   Spectral Analysis for Rare-Earth Ions in Transparent Solids.

Descriptive Note : Final rept. FY94,

Corporate Author : ARMY RESEARCH LAB ADELPHI MD

Personal Author(s) : Morrison, Clyde A. ; Wortman, Donald E.

PDF Url : ADA295458

Report Date : JUN 1995

Pagination or Media Count : 30

Abstract : A model was developed that includes a crystal-field Hamiltonian and the free-ion Hamilton ion for the analysis of the spectra of rare-earth ions in transparent solids. The report discusses phenomenological crystal-field parameters, B(km), obtained by the fitting of the experimental data of a particular ion-host combination, as well as their relationship with the derived crystal field parameters. The latter parameters, the derived Bkm' and factors affecting the Hartree-Fock values of (rk), such as shielding, wave function expansion, etc, are considered in detail. The theory of the transition probabilities of electric and magnetic dipole transitions are presented, as well as magnetic g factors, line strengths, branching ratios, and lifetimes. The entire work leans heavily on the investigations, both theoretical and experimental, performed at Harry Diamond Laboratories (now part of the Army Research Laboratory), and this work is referenced throughout this report. (AN)

Descriptors :   *IONS, *RARE EARTH ELEMENTS, *LASER MATERIALS, SOLID STATE LASERS, EXPERIMENTAL DATA, ARMY RESEARCH, PARAMETERS, PROBABILITY, TRANSPARENCE, SINGLE CRYSTALS, IMPURITIES, SPECTRA, EXPANSION, WAVE FUNCTIONS, SPECTRUM ANALYSIS, ELECTROSTATIC FIELDS, HAMILTONIAN FUNCTIONS, ION ION INTERACTIONS, MAGNETIC DIPOLES, HARTREE FOCK APPROXIMATION.

Subject Categories : Inorganic Chemistry
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE