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Deep-subwavelength metamaterial resonators operating at dual frequency regions
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Paper Abstract

Metamaterials are engineered structures designed to interact with electromagnetic radiation. The common understanding in the scientific community is that, a typical metamaterial operates within a particular frequency range that is determined by the metamaterials’ dimensions. In this paper, for the first time to the best of our knowledge, we demonstrate that a metamaterial can be functional in more than one frequency region. We propose an advanced design that can interact with both THz and near-infrared (NIR) frequencies concurrently. Moreover, our novel metamaterial can work independently of the input polarisation in both wavelength regions. We designed and fabricated meander line resonators with 300 nm linewidth distributed over 16.26 μm area and experimentally demonstrate a structure that can simultaneously interact with NIR and THz frequencies with a high miniaturisation factor. This dual-band photonic metamaterials can be used as an advanced device in applications such as sensing, imaging, filtering, modulation, and absorption.

Paper Details

Date Published: 31 December 2019
PDF: 2 pages
Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 112011R (31 December 2019); doi: 10.1117/12.2538398
Show Author Affiliations
Shridhar Manjunath, The Australian National Univ. (Australia)
Mingkai Liu, The Australian National Univ. (Australia)
Vidur Raj, The Australian National Univ. (Australia)
Rifat A. Aoni, The Australian National Univ. (Australia)
David A. Powell, Univ. of New South Wales, Canberra (Australia)
Ilya V. Shadrivov, The Australian National Univ. (Australia)
Mohsen Rahmani, The Australian National Univ. (Australia)


Published in SPIE Proceedings Vol. 11201:
SPIE Micro + Nano Materials, Devices, and Applications 2019
M. Cather Simpson; Saulius Juodkazis, Editor(s)

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