Eur. Phys. J. AP
Volume 17, Number 3, March 2002
|Page(s)||189 - 200|
|Section||Surfaces, Interfaces and Films|
|Published online||15 March 2002|
Optical anisotropy and EO properties of ferroelectrics TGS and LHP single crystals using a HAUP technique
Departamento de Física Básica, Facultad de Física, Universidad de La Laguna, Avda. Francisco
Sánchez s/n°, 38206 La Laguna, Tenerife, Spain
Corresponding author: firstname.lastname@example.org
Revised: 7 November 2001
Accepted: 20 November 2001
Published online: 15 March 2002
Triglycine sulphate, (TGS), is a ferroelectric crystal widely used in optical properties studies, phase transitions theory as well as test for experimental techniques. Lead monohydrogen phosphate, PbHPO4 (LHP), is a typical representative of the family of ferroelectric schultenites, suitable in testing microscopic theories of ferroelectricity. In this work the so-called high-accuracy universal polarimeter (HAUP) has been used to determine the natural anisotropy in the birefringent crystalline sections (010), obtaining the temperature dependence of optical anisotropy magnitudes of the crystal: gyrotropy, birefringence and optical indicatrix rotation. Our HAUP technique also permits to investigate the electro-optic (EO) coefficients associated to the phases above and below phase transition temperatures.
PACS: 78.20.Ek – Optical activity / 78.20.Jq – Electrooptical effects / 07.60.Fs – Polarimeters and ellipsometers
© EDP Sciences, 2002
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