DETERMINATION OF THE OPTICAL PROPERTIES OF NEODYMIUM-DOPED GLASSES.
Abstract
The absorption bands, emission bands and their band-widths, excitation bands, quantum efficiencies, and lifetimes of the metastable states of ten neodymium-doped glasses were determined at two temperatures, 25C and -196C. The glass host has very little influence on the absorption and emission spectra; however, the band-width of the emission radiation depends both on the glass host and the sample temperature. The shape of these spectra changes slightly with temperature. On the other hand, the quantum efficiencies and lifetimes depend on the composition of the glass and are essentially independent of temperature. The maximization of the optical pumping efficiency of these glasses were discussed in terms of the variation of the quantum efficiency with excitation wavelengths; that is, the dependence of the rate of population of the upper level with excitation wavelength. Also, the relative lasing efficiency at a given rate of population of the excited states was determined as a function of the glass composition. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0642160
Entities
People
- Gilbert R. Haugen
Organizations
- SRI International