Shallow trap modelling of infrared sensitive BaTiO3
Shallow trap modelling of infrared sensitive BaTiO3
We present experimental data for the intensity-dependent absorption coefficient of a photorefractive "blue" sample of rhodium-doped BaTiO3 using beams of different wavelengths. A numerical photorefractive two-level model incorporating dual-wavelength illumination and a secondary photorefractive centre gives good agreement with experiment. We deduce values for the number densities, photoionisation cross-sections, thermal ionisation rate and recombination coefficients of the photorefractive centres. In this sample we determine that there is the usual deep trap concentration of ~ 2x1016 cm-3 and a relatively high shallow trap density of ~1 × 1018 cm-3.
Ross, G.W.
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Jeffrey, P.M.
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Eason, R.W.
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Damzen, M.J.
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Garcia, R.R.
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Troth, R.
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Garrett, M.H.
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Rytz, D.
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1994
Ross, G.W.
e881119e-2126-442e-a24d-506dac48a4a4
Jeffrey, P.M.
c6d19a58-60a2-4bfc-9a97-0bff8399889b
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Damzen, M.J.
cce812a0-0634-4d11-b39e-0191ddd04d60
Garcia, R.R.
6ea59d67-ce85-488f-a871-64d7c34d71f6
Troth, R.
4a2def5e-7eca-4298-b482-bd86872ac011
Garrett, M.H.
dbb13ee6-65a8-45e2-98cb-8481b972de13
Rytz, D.
dbd8f04a-c37f-4bfe-b392-77ca326f43fb
Ross, G.W., Jeffrey, P.M., Eason, R.W., Damzen, M.J., Garcia, R.R., Troth, R., Garrett, M.H. and Rytz, D.
(1994)
Shallow trap modelling of infrared sensitive BaTiO3.
CLEO Europe: Conference on Lasers & Electro-Optics Europe, Amsterdam, Amsterdam, Netherlands.
28 Aug - 02 Sep 1994.
Record type:
Conference or Workshop Item
(Paper)
Abstract
We present experimental data for the intensity-dependent absorption coefficient of a photorefractive "blue" sample of rhodium-doped BaTiO3 using beams of different wavelengths. A numerical photorefractive two-level model incorporating dual-wavelength illumination and a secondary photorefractive centre gives good agreement with experiment. We deduce values for the number densities, photoionisation cross-sections, thermal ionisation rate and recombination coefficients of the photorefractive centres. In this sample we determine that there is the usual deep trap concentration of ~ 2x1016 cm-3 and a relatively high shallow trap density of ~1 × 1018 cm-3.
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Published date: 1994
Venue - Dates:
CLEO Europe: Conference on Lasers & Electro-Optics Europe, Amsterdam, Amsterdam, Netherlands, 1994-08-28 - 1994-09-02
Identifiers
Local EPrints ID: 77183
URI: http://eprints.soton.ac.uk/id/eprint/77183
PURE UUID: f0730930-434e-40d2-87c9-2c0d5d475a92
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:33
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Contributors
Author:
G.W. Ross
Author:
P.M. Jeffrey
Author:
M.J. Damzen
Author:
R.R. Garcia
Author:
R. Troth
Author:
M.H. Garrett
Author:
D. Rytz
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