Optical tunability of mid-IR based AZO nano geometries through the characterisation of plasmon induced resonance modes

Majumder, D and Ghosh, A (2022) Optical tunability of mid-IR based AZO nano geometries through the characterisation of plasmon induced resonance modes. In: 2022 IEEE International Conference on Emerging Electronics, 11- 14 Dec 2022, Bangalore.

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Abstract

The highly lossy nature of the conventional noble metals in the infrared region limits their implementation to the UV-Vis part of the electromagnetic spectrum. Hence, the necessity for a lossless alternate plasmonic material having large negative permittivity in the IR regime has paved the way for the exploration of transparent conducting oxides such as Aluminium doped Zinc Oxide. The mid-IR plasmonic response has a strong dependence on diverse tuneable parameters, the most efficient and flexible being the geometrical parameters. Detailed theoretical investigations using COMSOL Multiphysics can obliterate the requirement of complex fabrication efforts to understand the dynamic tunability of the optical signal. This study is motivated by the systematic investigation of the effect of shape factors on the linear optical properties of three different AZO based plasmonic planar nanostructures namely Nonamer, Dipole, and BowTie nanoantennas. A comparative matrix for various configuration sensitive optical modes investigated by this work provides a unique possibility to encompass the idea for exploration and design of mid-IR photodetection and sensor-based devices.

Item Type:	Conference Paper
Publication:	2022 IEEE International Conference on Emerging Electronics, ICEE 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Alternate Plasmonic materials; AZO; COMSOL; Field Enhancement; Infrared; optical tunability; Plasmonics
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	28 Jun 2023 06:04
Last Modified:	28 Jun 2023 06:04
URI:	https://eprints.iisc.ac.in/id/eprint/82190

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