| Issue |
Eur. Phys. J. AP
Volume 17, Number 3, March 2002
|
|
|---|---|---|
| Page(s) | 189 - 200 | |
| Section | Surfaces, Interfaces and Films | |
| DOI | https://doi.org/10.1051/epjap:2002012 | |
| Published online | 15 March 2002 | |
https://doi.org/10.1051/epjap:2002012
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: chdezr@ull.es
Received:
12
July
2001
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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