Open AccessPolarization Rotation by Barium Titanate (BaTiO3) Thin Film with an External Electric Field
Author(s) -
N. A. Razilam,
S. H. Najamudin,
W. S. W. Ramli,
P. Poopalan
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1535/1/012043
Subject(s) - materials science , barium titanate , thin film , electric field , refractive index , polarization (electrochemistry) , optoelectronics , polarizer , optics , ferroelectricity , dielectric , nanotechnology , birefringence , chemistry , physics , quantum mechanics
Barium Titanate (BaTiO 3 ) thin films are suitable for many applications especially photonic due to its large electro-optic (EO) coefficient where the EO effect causes a change of optical refractive index in a film due presence of an electric field. The first step towards the development of thin film based EO modulators is to study its EO properties. The thin film BaTiO 3 was prepared by a sol gel process and annealed at 900°C and then subjected to EO interrogation via the Sénarmont technique. It shows that the technique affected the electro-optic properties of the thin film and the electro-optic behaviour. The Sénarmont technique also utilized the EO measurement of BaTiO 3 thin films from negative 20V up to positive 20V by connecting the electrical and optical domain with different angles of polarizer that are from 0° up to 180°. The results show that the power measurement is much higher between 30° to 50° with positive 20V. It is found that electric field disrupts the EO behaviour of the film.