THz characterization and demonstration of visible-transparent/terahertz- functional electromagnetic structures in ultra-conductive La-doped BaSnO3 Films

被引：17

作者：

Arezoomandan, Sara ^{[1
]}

Prakash, Abhinav ^{[2
]}

Chanana, Ashish ^{[1
]}

Yue, Jin ^{[2
]}

Mao, Jieying ^{[1
]}

Blair, Steve ^{[1
]}

Nahata, Ajay ^{[1
]}

Jalan, Bharat ^{[2
]}

Sensale-Rodriguez, Berardi ^{[1
]}

机构：

[1] Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT 84112 USA

[2] Univ Minnesota Twin Cities, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

基金：

美国国家科学基金会;

关键词：

OXIDE THIN-FILMS; TERAHERTZ CONDUCTIVITY; ZNO; TRANSMISSION;

D O I：

10.1038/s41598-018-22038-w

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：9

共 31 条

[11] THE EFFECTS OF DEPOSITION RATE ON THE STRUCTURAL AND ELECTRICAL-PROPERTIES OF ZNO-AL FILMS DEPOSITED ON (1120) ORIENTED SAPPHIRE SUBSTRATES [J].