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Ferroelectrics Volume 510, 2017 - Issue 1
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Original Articles

Effect of optical pump on the dielectric properties of the Barium Strontium Titanate film

Chunya LuoDepartment of Physics and Mechanical & Electrical Engineering, Institute of Information Science and Technology, Hubei University of Education, Wuhan, China;College of Electronic Information, Huanggang Normal University, Huanggang, China;Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Jie JiWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Yunkun RaoWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Gang YaoWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Dan LiDepartment of Physics and Mechanical & Electrical Engineering, Institute of Information Science and Technology, Hubei University of Education, Wuhan, China
,
Ying ZengWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Longsheng XiaoDepartment of Physics and Mechanical & Electrical Engineering, Institute of Information Science and Technology, Hubei University of Education, Wuhan, China
,
Xinxing LiuWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
,
Jianquan YaoDepartment of Physics and Mechanical & Electrical Engineering, Institute of Information Science and Technology, Hubei University of Education, Wuhan, China;Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
&
Furi LingWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaCorrespondence[email protected]
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Pages 1-7 | Accepted 21 Mar 2016, Published online: 30 Jun 2017
 
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ABSTRACT

We investigated the tunability of the dielectric characterization spectra of the Ferroelectric Barium Strontium Titanate (Ba0.5Sr0.5TiO3) thin films in an external optical field through the terahertz time-domain spectroscopy. The real part of the permittivity reached up to 22% when we applied the optical field up to 600mW/cm2 and the imaginary part is not really obvious. And the results are attributed to the soft mode harden caused by the excited optical field.

Funding

This work was supported by the project of Hubei Ministry of Education (No. Q20152904).

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