Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442411 | Optical Materials | 2017 | 5 Pages |
Abstract
The dielectric property of ferroelectric barium titanate (BaTiO3) thin film with optical field was investigated by terahertz time-domain spectroscopy at room temperature. Experimental results showed that dielectric constant of BTO film was increased with the optical pump powers, and tunability of the real part of dielectric constant could be reached to74%. The reason of realizing high modulation depth could be explained as photorefractive and photothermal effects. Furthermore, the variation of refractive index displayed a monotonically increase with the optical powers.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Siyan Zhou, Jie Ji, Yue Tian, Furi Ling, Wenfeng Yu,