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Shallow-trap-induced positive absorptive two-beam coupling 'gain' and light-induced transparency in nominally undoped barium titanateThe asymmetry of beam coupling with respect to the orientation of the polar axis in a nominally undoped barium titanate crystal is used to determine the electro-optic and absorptive 'gain' in the usual beam-coupling geometry. For small grating wave vectors, the electrooptic coupling vanishes but the absorptive coupling remains finite and positive. Positive absorptive coupling at small grating wave vectors is correlated with the light-induced transparency of the crystal described herein. The intensity and grating wave vector dependence of the electrooptic and absorptive coupling, and the light-induced transparency are consistent with a model incorporating deep and shallow levels.
Document ID
19920072058
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Garrett, M. H.
(MIT Cambridge, MA, United States)
Tayebati, P.
(Foster-Miller, Inc. Waltham, MA, United States)
Chang, J. Y.
(NASA Langley Research Center Hampton, VA, United States)
Jenssen, H. P.
(NASA Langley Research Center Hampton, VA, United States)
Warde, C.
(MIT Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1992
Publication Information
Publication: Journal of Applied Physics
Volume: 72
Issue: 5 Se
ISSN: 0021-8979
Subject Category
Solid-State Physics
Accession Number
92A54682
Funding Number(s)
CONTRACT_GRANT: MDA972-90-C-0037
CONTRACT_GRANT: NAG1-996
Distribution Limits
Public
Copyright
Other

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