Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1493235 | Optical Materials | 2016 | 4 Pages |
Abstract
The absorption tunability of 100 nm thickness of ferroelectric Barium Strontium Titanate (Ba0.5Sr0.5TiO3) thin films with different densities of pumped optical field is measured by terahertz time-domain spectroscopy in the range of 0.2 THz - 1.2 THz at 19 °C. Experimental results show that the absorption coefficient of BST film is approximately at 5000 cmâ1-20000 cmâ1 in the range of 0.2 THz - 1.2 THz and the absorption coefficient reached up to 16% when we applied the optical field up to 600 mW. The theoretical calculations reveal that increasing photoexcitation fluences is responsible for the increasing of transmission change in the conduction current density cause the absorption coefficient varied.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Chunya Luo, Jie Ji, Jin Yue, Yunkun Rao, Gang Yao, Dan Li, Ying Zeng, Renkui Li, Longsheng Xiao, Xinxing Liu, Jianquan Yao, Furi Ling,