Changes in the optical absorption induced in the Bi12TiO20:Al crystal by exposition to short- and long-wavelength radiation
Abstract
The impurity absorption model is used to describe the experimentally observed reversible changes in the optical absorption spectrum induced in the Bi12TiO20:Al crystal by subsequent exposition to short-wavelength radiation with λi, = 532 nm and longer-wavelength radiation with λn changing from 588 to 1064 nm. The model takes into account the photoinduced transitions between two metastable states of a deep defect center leading to the change of its position in the crystal lattice under conditions of strong lattice relaxation.
- Publication:
-
Journal of Physics Conference Series
- Pub Date:
- August 2016
- DOI:
- 10.1088/1742-6596/737/1/012018
- Bibcode:
- 2016JPhCS.737a2018D