EXCITON ABSORPTION IN THE PRESENCE OF EXCITED F CENTERS (II)

A rich spectrum of absorption bands is observed at 7 K near the fundamental absorption edge of KI, RbI, CsI and RbBr crystals containing F-centers in the relaxed excited state. The large population of excited F-centers necessary for these experiments is achieved with a Q-switched Ruby laser. The res...

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Bibliographic Details
Main Authors: Frohlich, Dietmar, Mahr, Herbert
Format: Report
Language:English
Subjects:
ABSORPTION
ABSORPTION SPECTRA
ATOMIC ENERGY LEVELS
ATOMIC PROPERTIES
ATOMIC STRUCTURE
BROMIDES
CESIUM COMPOUNDS
COLOR CENTERS
CRYSTAL SUBSTRUCTURE
ELECTRON MIGRATION
ELECTRON TRANSITIONS
EXCITATION
IODIDES
IONIZATION POTENTIALS
LASERS
MATHEMATICAL ANALYSIS
OPTICAL PROPERTIES
POTASSIUM COMPOUNDS
Q-SWITCHING
RUBIDIUM COMPOUNDS
RUBY
SOLID STATE PHYSICS
SPECTRUM ANALYZERS
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Summary:A rich spectrum of absorption bands is observed at 7 K near the fundamental absorption edge of KI, RbI, CsI and RbBr crystals containing F-centers in the relaxed excited state. The large population of excited F-centers necessary for these experiments is achieved with a Q-switched Ruby laser. The results are discussed in terms of models of excitons formed near excited F-centers. (Author)