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Proceedings Paper

TM and TE optical modes of the planar anisotropic aluminum-doped zinc oxide waveguides at the epsilon-near-zero spectral point
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Paper Abstract

In this work, we investigate the guided mode properties of planar anisotropic aluminum-doped zinc oxide waveguides (air/metamaterial/silicon oxide) at the epsilon-near-zero spectral point. Our calculations predict two fundamentally different propagation regimes for the lowest order guided TM and TE modes over a broad spectral range (400-2000 nm). Our study shows that excitation of the TM guided mode is possible for wavelengths higher than epsilon-near-zero spectral point. However the propagation distance for such a TM mode will strongly depend on the spectral position of the mode’s eigenfrequency. E.g., propagation distance is maximized for eigenfrequencies near epsilon-near-zero point and reduced by an order of magnitude as the eigenfrequency is tuned by ~50 nm.

Paper Details

Date Published: 5 September 2019
PDF: 5 pages
Proc. SPIE 11080, Metamaterials, Metadevices, and Metasystems 2019, 110801X (5 September 2019); doi: 10.1117/12.2528924
Show Author Affiliations
Skylar Lilledahl, San Diego State Univ. (United States)
Priscilla Kelly, San Diego State Univ. (United States)
Shouxun Wang, San Diego State Univ. (United States)
Lyuba Kuznetsova, San Diego State Univ. (United States)

Published in SPIE Proceedings Vol. 11080:
Metamaterials, Metadevices, and Metasystems 2019
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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