Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Intensity dependence of the photogalvanic effect in barium titanate

Not Accessible

Your library or personal account may give you access

Abstract

A crystal of BaTiO3 illuminated by a spatially periodic light intensity pattern will exhibit both uniform and spatially periodic photogalvanic currents. The modulated part of the intensity produces a spatially period photo-galvanic current, which creates a spatially periodic electric field in the crystal. This field, measured by two-beam coupling, is spatially in phase with the light pattern and increases monotonically with intensity, saturating at ∼450 V/cm. The spatially uniform photogalvanic current produced by the average light intensity creates a spatially uniform electric field, which is surprisingly small (≈10 V/cm) across a nominally open-circuited BaTiO3 crystal at high optical intensity. We explain the observed intensity dependence of two-beam coupling by proposing that photogalvanic currents arise with different strengths from at least two trap levels in the crystal.

© 1992 Optical Society of America

Full Article  |  PDF Article
More Like This
Intensity-dependent absorption and photorefractive effects in barium titanate

G. A. Brost, R. A. Motes, and J. R. Rotge
J. Opt. Soc. Am. B 5(9) 1879-1885 (1988)

High beam-coupling gain and deep- and shallow-trap effects in cobalt-doped barium titanate, BaTiO3:Co

M. H. Garrett, J. Y. Chang, H. P. Jenssen, and C. Warde
J. Opt. Soc. Am. B 9(8) 1407-1415 (1992)

Light-induced dark decay and sublinear intensity dependence of the response time in cobalt-doped barium titanate

J. Y. Chang, M. H. Garrett, P. Tayebati, H. P. Jenssen, and C. Warde
J. Opt. Soc. Am. B 12(2) 248-254 (1995)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (63)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved