Active Polarization Modulation of Terahertz Radiation Using Metamaterial/Graphene-Based Optoelectronic Devices

Zaman, Abdullah and Degl'Innocenti, Riccardo and Lu, Yuezhen and Almond, Nikita W. and Burton, Oliver J. and Alexander-Webber, Jack and Hofmann, Stephen and Mitchell, Thomas and Griffiths, Jonathan D. P. and Beere, Harvey E. and Ritchie, David A. (2022) Active Polarization Modulation of Terahertz Radiation Using Metamaterial/Graphene-Based Optoelectronic Devices. In: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) :. International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) . IEEE, NLD, pp. 1-3. ISBN 9781728194288

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Abstract

We investigate the modulation performance of a metamaterial/graphene optoelectronic device in the THz range. Operating characteristics such as amplitude, phase and polarization modulations of broadband THz radiation are reported. The accomplishments of modulation depth include >75% in spectral amplitude, >15∘ in spectral phase, >0.2 active modulation of ellipticity ratio, and active rotational angle changes of 20°. These achievements are the key elements towards efficient manipulations of THz radiation for applications such as next-generation wireless communications, spectroscopy, and imaging.