RADIATION FROM THE 4T2 STATE OF CR(3+) IN RUBY AND EMERALD.
Abstract
The first appreciable decrease in the lifetime of the 2E state of CR(3+) in ruby and emerald as the temperature is raised is shown to be the result of populating the shorter-lived 4T2 level in thermal equilibrium with the metastable 2E. The direct transition from the 4T2 to the ground 4A2 state is shown to be mostly radiative. It is shown that, in both crystals, the emission peak of the 4T2 4A2 transition is shifted considerably toward longer wavelengths compared to the absorption peak of that transition. The reduction in lifetime and quantum efficiency at very high temperatures is also considered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0812791
Entities
People
- C. A. Moore
- P. Kisliuk
Organizations
- The Aerospace Corporation