Temperature Dependence of the Widths and Positions of the R Lines in Li2Ge7O15:Cr3+
- 1 September 1968
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 39 (10) , 4517-4521
- https://doi.org/10.1063/1.1655795
Abstract
The widths and positions of the R1 fluorescence lines of trivalent chromium ions in nonequivalent lattice sites in lithium germanate crystals have been measured at temperatures from 24°K up to 200°K. The temperature dependences of the linewidths are explained in terms of microscopic strains, direct phonon processes, and two‐phonon Raman scattering processes. The temperature dependences of the lineshifts are attributed to two‐phonon virtual processes and direct phonon processes. The theraml changes in the widths and positions are found to be of the same order of magnitude. These results are compared with those from similar measurements on ruby‐ and chromium‐doped MgO.This publication has 7 references indexed in Scilit:
- Fluorescence of Chromium-Doped Lithium Germanate CrystalsJournal of Applied Physics, 1967
- Temperature Dependence of the Widths and Positions of the R and N Lines in Heavily Doped RubyJournal of Applied Physics, 1966
- Direct 2T1−2E Phonon Relaxation in Ruby and Its Effect Upon R-Line BreadthJournal of Applied Physics, 1966
- Phonon-Induced Relaxation in Excited Optical States of Trivalent Praseodymium in LaPhysical Review B, 1964
- Temperature Dependence of the Width and Position of theFluorescence Lines ofandin MgOPhysical Review B, 1964
- Linewidth and Temperature Shift of the R Lines in RubyJournal of Applied Physics, 1963
- The Shape of Spectral Lines: Tables of the Voigt ProfileAustralian Journal of Physics, 1959