Energy Transfer between Inorganic Ions in Glasses.
Abstract
Absorption and fluorescence spectra of Er(3+) in germanate and tellurite glasses were obtained. Spontaneous transition probabilities were calculated using the Judd-Ofelt theory and intensity parameters obtained from measured integrated absorption coefficients. Quantum efficiencies of the fluorescences were measured by the comparative method and by the use of measured decay times. Multiphonon relaxation rates were calculated using the experimental data. Radiative transition probabilities from energy levels of Tm(3+) in glasses were calculated using the matrix elements obtained by intermediate coupling schemes and experimentally obtained intensity parameters. Nonradiative transition probabilities in different glass hosts were calculated. Quantum efficiencies of luminescence of rare earth in glasses can be predicted. Absorption and Fluorescence spectra of Sm(3+) were measured in GeO2, ternary germanate and borax glasses. From these the intensity parameters were calculated by use of Judd-Ofelt formula. Visible emission and decay times of Sm(3+) and its relative quantum efficiencies were measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA006644
Entities
People
- Renata Reisfeld
Organizations
- Hebrew University of Jerusalem