Accession Number : ADA200652


Title :   Intensity-Dependence Absorption and Photorefractive Effects in Barium Titanate


Corporate Author : FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY CO


Personal Author(s) : Brost, G A ; Motes, R A ; Rotge, J R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a200652.pdf


Report Date : Sep 1988


Pagination or Media Count : 8


Abstract : We present experimental data for BaTiO3 that exhibit an intensity dependence in the absorption coefficient and the two-beam coupling coefficient at intensities between 0.002 and 40 S/sq. cm. The effective empty-trap concentration was found to increase with intensity. We present a model, in the spirt of commonly used (photorefractive) theories, for photorefraction and optical absorption that explains these effects. The intensity dependence was attributed to the presence of secondary photorefractive centers.


Descriptors :   *OPTICAL PROPERTIES , *BARIUM TITANATES , *ABSORPTION COEFFICIENTS , COEFFICIENTS , ABSORPTION , BEAMS(RADIATION) , EXPERIMENTAL DATA , REPRINTS , COUPLING(INTERACTION) , INTENSITY


Subject Categories : Inorganic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE