Self-quenching of luminescence in concentrated lithium--erbium and lithium--holmium double fluoride crystals

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Opt. Spectrosc. (Engl. Transl.); (United States)

OSTI ID:5697423

Tkachuk, A M; Klokishner, S I; Petrov, M V

For the radiative terms of holmium and erbium ions in concentrated LiErF/sub 4/ and LiHoF/sub 4/ crystals, numerical estimates were made of the microparameters and transfer rates on the basis of known experimental data on the structure of luminescence centers, probabilities of intracenter transitions, phonon spectrum of the crystals, and electron--phonon interaction. The schemes of the most important processes of cross-relaxation quenching and nonlinear (in excitation intensity) interaction have been determined. On the basis of an analysis of numerical values of the rates of intracenter relaxation and interionic transfer of energy, conclusions are reached concerning the processes which significantly affect the radiative characteristics of concentrated crystals. The role of the processes of cross-relaxation quenching and nonlinear interaction in the formation of an inverse population of excited multiplets and the influences of these processes on the characteristics of stimulated emission are discussed.

• Research Organization: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5697423
• Journal Information: Opt. Spectrosc. (Engl. Transl.); (United States), Vol. 59:4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ERBIUM FLUORIDES
EMISSION SPECTRA
HOLMIUM FLUORIDES
LITHIUM FLUORIDES
SOLID STATE LASERS
ENERGY TRANSFER
STIMULATED EMISSION
POPULATION INVERSION
RELAXATION
ALKALI METAL COMPOUNDS
EMISSION
ENERGY-LEVEL TRANSITIONS
ERBIUM COMPOUNDS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HOLMIUM COMPOUNDS
LASERS
LITHIUM COMPOUNDS
LITHIUM HALIDES
RARE EARTH COMPOUNDS
SPECTRA
420300* - Engineering- Lasers- (-1989)