Quasioptical devices based on extraordinary transmission at THz

Miguel Beruete

doi:10.1117/12.2228237

29 April 2016 Quasioptical devices based on extraordinary transmission at THz

Miguel Beruete

Proceedings Volume 9856, Terahertz Physics, Devices, and Systems X: Advanced Applications in Industry and Defense; 98560R (2016) https://doi.org/10.1117/12.2228237
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

In this work I will present our latest advances in components developed from extraordinary transmission concepts operating at terahertz (THz) frequencies. First, a structure exhibiting two different extraordinary transmission resonances depending on the polarization of the incident wave will be shown. The peaks of transmission appear at approximately 2 and 2.5 THz for vertical and horizontal polarization, respectively, with a transmittance above 60% in both cases. Later on, a meandering line structure able to tune the extraordinary transmission resonance will be discussed. The operation frequency in this case is between 9 and 17 THz. A self-complementary polarizer will be then presented, with a high polarization purity. The fundamentals of this device based on the Babinet’s principle will be discussed in depth. Finally, all these structures will be combined together to produce a dual-band Quarter Wave Plate able to convert a linear polarization at the input in a circular polarization at the output at two different bands, 1 and 2.2. THz. Some final words regarding the potential of extraordinary transmission for sensing applications will close the contribution.

Citation Download Citation

Miguel Beruete "Quasioptical devices based on extraordinary transmission at THz", Proc. SPIE 9856, Terahertz Physics, Devices, and Systems X: Advanced Applications in Industry and Defense, 98560R (29 April 2016); https://doi.org/10.1117/12.2228237

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KEYWORDS

Terahertz radiation

Polarization

Dielectric polarization

Polarizers

Transmittance

Wave plates

Metals

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