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Anisotropic focusing characteristics of micro-domain structures within crystalline Sr0.61Ba0.39Nb2O6 : the crystal ball

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We report the anisotropic focusing characteristics of a spherically configured region of micro-domains that have been induced within a cubic shaped crystal of Ce:doped Sr(0.61)Ba(0.39)Nb2O6. The internal spherical structure focuses extraordinary polarised light, but not ordinary polarised. The spherical region, which is easily observed via scattering, is formed as the crystal cools down, after a repoling cycle through the Curie temperature, with an applied field. Analytic modelling of the thermal gradients that exist within the crystal during cooling reveals a small ( < 1°) temperature difference between the central and outside regions. The similarity in shape between these temperature profiles and the observed scattering region suggests a possible mechanism for the growth of this spherical micro-domained structure.

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Citation

Smith, Peter G.R., Ross, Graeme W., Brown, Paul T., Eason, Robert W. and Daniell, Geoffrey J. (1997) Anisotropic focusing characteristics of micro-domain structures within crystalline Sr0.61Ba0.39Nb2O6 : the crystal ball Applied Optics, 36, (22), pp. 5383-5387. (doi:10.1364/AO.36.005383).

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Published date: 1997

Identifiers

Local EPrints ID: 78022
URI: http://eprints.soton.ac.uk/id/eprint/78022
ISSN: 0003-6935
PURE UUID: 837e597f-2a4b-4048-b27b-cd8b44543992
ORCID for Robert W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:27

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Contributors

Author: Peter G.R. Smith
Author: Graeme W. Ross
Author: Paul T. Brown
Author: Robert W. Eason ORCID iD
Author: Geoffrey J. Daniell

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