Spectroscopy of materials for terahertz photonics

K. Postava; J. Chochol; M. Mičica; M. Vanwolleghem; P. Kolejak; L. Halagačka; M. Cada; J. Pištora; J.-F. Lampin

doi:10.1117/12.2264550

23 December 2016 Spectroscopy of materials for terahertz photonics

K. Postava, J. Chochol, M. Mičica, M. Vanwolleghem, P. Kolejak, L. Halagačka, M. Cada, J. Pištora, J.-F. Lampin

Proceedings Volume 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 1014207 (2016) https://doi.org/10.1117/12.2264550
Event: 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2016, Jasna, Slovakia

Abstract

In this paper we apply the terahertz time-domain spectroscopy (THz-TDS) to obtain optical function spectra in the range from 0.06 to 3 THz. Polarization sensitivity is obtained using azimuth-controlled wire-grid polarizers. We demonstrate general methods on characterization of plasmonic semiconductors. Detail characterization of optical and magneto-optical material properties is also motivated by a need of optical isolator in THz spectral range. The technique is applied to III-V semiconductors. The typical material is a single crystal undoped InSb having the plasma frequency in the range of interest. With appropriate magnetic field (in our case 0.4 T) we observed coupling of plasma and cyclotron behavior of free electrons with gigantic magneto-optic effect in the THz spectral range.

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K. Postava, J. Chochol, M. Mičica, M. Vanwolleghem, P. Kolejak, L. Halagačka, M. Cada, J. Pištora, and J.-F. Lampin "Spectroscopy of materials for terahertz photonics", Proc. SPIE 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1014207 (23 December 2016); https://doi.org/10.1117/12.2264550

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