Tunable multiband plasmonic response of indium antimonide touching microrings in the terahertz range.

Author(s) Moridsadat, M.; Golmohammadi, S.; Baghban, H.
Journal Appl Opt
Date Published 2018 Jun 01

In this paper, we propose a terahertz (THz) plasmonic structure that supports three resonance modes, including the charge transfer plasmon (CTP), the bonding dipole-dipole plasmon, and the antibonding dipole-dipole plasmon, which can be strongly tuned by geometrical parameters, passively, and the temperature, actively. The structure exhibits a considerable thermal sensitivity of more than 0.01 THz/K. The introduced multiband and tunable THz plasmonic structures offer important applications in thermal switches, thermo-optical modulators, broadband filters, design of multifunctional molecules originating from the multiband specification of the proposed structure, and improvement in plasmonic sensor applications stemming from a detailed study of the CTP mode.

DOI 10.1364/AO.57.004368
ISSN 1539-4522
Citation Appl Opt. 2018;57(16):43684375.

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