Optically driven terahertz wave polarization control by unaligned carbon nanotubes

Anatoly Kvitsinskiy; Petr Demchenko; Mikhail Novoselov; Ilya Anoshkin; Kirill Bogdanov; Alexander Baranov; Mikhail Khodzitsky

doi:10.1117/12.2573706

10 October 2020 Optically driven terahertz wave polarization control by unaligned carbon nanotubes

Anatoly Kvitsinskiy, Petr Demchenko, Mikhail Novoselov, Ilya Anoshkin, Kirill Bogdanov, Alexander Baranov, Mikhail Khodzitsky

Author Affiliations +

Proceedings Volume 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII; 1155908 (2020) https://doi.org/10.1117/12.2573706
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

Terahertz time-domain spectroscopic polarimetry (THz-TDSP) method was used to experimental study polarization properties of unaligned single-wall carbon nanotube thin films with different geometric parameters on transparent float glass substrates in a frequency range 0.2-0.8 THz at a controlled room temperature of 291–293K, and a relative humidity of 40–45%. Frequency dependences of azimuth and ellipticity angles of a polarization ellipse of electromagnetic waves transmitted through the samples were obtained for values of 0.2–1:.0Wcm^-2of an external 980nm near infrared optical pumping, with an external static magnetic field of ~0:3T. A change of 15° in the azimuth angle, and of 10° in the ellipticity angle was achieved. The results show that by using carbon nanomaterials-based structures it is possible to devise efficient and affordable magneto-optically tunable polarization modulators that can be used in the advanced areas of terahertz nanoscience and nanotechnologies.

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Anatoly Kvitsinskiy, Petr Demchenko, Mikhail Novoselov, Ilya Anoshkin, Kirill Bogdanov, Alexander Baranov, and Mikhail Khodzitsky "Optically driven terahertz wave polarization control by unaligned carbon nanotubes", Proc. SPIE 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII, 1155908 (10 October 2020); https://doi.org/10.1117/12.2573706

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