Abstract

We report on terahertz characterization of La-doped BaSnO3 (BSO) thin-films. BSO is a transparent complex oxide material, which has attracted substantial interest due to its large electrical conductivity and wide bandgap. The complex refractive index of these films is extracted in the 0.3 to 1.5 THz frequency range, which shows a metal-like response across this broad frequency window. The large optical conductivity found in these films at terahertz wavelengths makes this material an interesting platform for developing electromagnetic structures having a strong response at terahertz wavelengths, i.e. terahertz-functional, while being transparent at visible and near-IR wavelengths. As an example of such application, we demonstrate a visible-transparent terahertz polarizer.

Details

Title
THz characterization and demonstration of visible-transparent/terahertz-functional electromagnetic structures in ultra-conductive La-doped BaSnO3 Films
Author
Arezoomandan, Sara 1   VIAFID ORCID Logo  ; Prakash, Abhinav 2   VIAFID ORCID Logo  ; Chanana, Ashish 1 ; Jin, Yue 2 ; Mao, Jieying 1 ; Blair, Steve 1 ; Nahata, Ajay 1 ; Jalan, Bharat 2 ; Sensale-Rodriguez, Berardi 1 

1  Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA 
2  Department of Chemical Engineering and Materials Science, University of Minnesota – Twin Cities, Minneapolis, MN, USA 
Pages
1-9
Publication year
2018
Publication date
Feb 2018
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-018-22038-w
ProQuest document ID
2007687536
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.