Refractive index gratings in rare-earth-doped alkaline earth glasses

Technical Report · Tue Jan 15 04:00:00 EST 1991

OSTI ID:5469746

French, V A; Powell, R C

Four-wave-mixing techniques were used to produce permanent laser-induced refractive index gratings in Eu{sup 3+}-doped silicate glasses. These gratings are associated with a thermally induced change in the local glass structure at the site of the Eu{sup 3+} ions, leading to a double-minimum potential well for the electronic energy levels of the Eu3+ ions. The efforts on the characteristics of the permanent laser-induced gratings produced by changing the divalent modifier ions of the glass host are reported and a theoretical model is presented to explain the physical origin of the change in the refractive index of the material.

• Research Organization: Oklahoma State Univ., Stillwater, OK (United States). Center for Laser Research
• OSTI ID: 5469746
• Report Number(s): AD-A-234447/1/XAB; CNN: DAAL03-88-K-0025
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CRYSTAL STRUCTURE
DOPED MATERIALS
ELEMENTS
ENERGY
ENERGY LEVELS
EUROPIUM
FREQUENCY MIXING
GLASS
HEAT
LASERS
MATERIALS
MATHEMATICAL MODELS
METALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RARE EARTHS
REFRACTIVITY
USES