Spectroscopic characteristics of chromium-doped mullite glass-ceramics
The chromium (3+) ion has been widely used as an optical activator in solid-state, tunable laser materials. High octahedral field-stabilization energy and resistance against both oxidation and reduction minimize the dependence of chromium (3+) on the solid-state host matrix. However, the high sensitivity of electronic structure on crystal field strength makes the appropriate choice of host the condition for success. Characteristics of chromium-doped mullite ceramics are discussed with reference to possible laser applications. Dominant features are attributed to large and inherent spectroscopic inhomogeneity of mullite. The spectroscopic data are analyzed using a generalized McCumber theory. The peak-stimulated emission cross section is 0.54 x 10 to the -20 sq cm. This together with preliminary single-pass measurements, indicate that gain for mullite is about 2.6 times smaller than gain for alexandrite.
- Research Organization:
- Boston Univ., MA (USA)
- OSTI ID:
- 6503760
- Report Number(s):
- AD-A-200729/2/XAB
- Country of Publication:
- United States
- Language:
- English
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360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKALINE EARTH METAL COMPOUNDS
BERYL
BERYLLIUM COMPOUNDS
BERYLLIUM SILICATES
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHROMIUM IONS
CRYSTAL DOPING
DOPED MATERIALS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
LASER MATERIALS
MATERIALS
MINERALS
MULLITE
OPTICAL PROPERTIES
OXIDATION
OXIDE MINERALS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SPECTROSCOPY
STABILIZATION