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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
THz characterization and demonstration of visible-transparent/terahertz-functional electromagnetic structures in
Sara Arezoomandan1, Abhinav Prakash2, Ashish Chanana1
1Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, 84112, USA.
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.
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