Refractive index gratings in rare-earth-doped alkaline earth glasses
- 15 January 1991
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 69 (2) , 913-917
- https://doi.org/10.1063/1.347333
Abstract
Four-wave-mixing techniques were used to produce permanent laser-induced refractive index gratings in Eu3+ -doped silicate glasses. These gratings are associated with a thermally induced change in the local glass structure at the site of the Eu3+ ions, leading to a double-minimum potential well for the electronic energy levels of the Eu3+ ions. The effects 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.This publication has 10 references indexed in Scilit:
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