Slow Light Effect in a High Quality Factor Toroidal Mode in a Terahertz Metasurface

Angana Bhattacharya; Gagan Kumar

doi:10.1364/FIO.2022.JTu5A.92

Frontiers in Optics + Laser Science 2022 (FIO, LS)
Technical Digest Series (Optica Publishing Group, 2022),
paper JTu5A.92
•https://doi.org/10.1364/FIO.2022.JTu5A.92

Slow Light Effect in a High Quality Factor Toroidal Mode in a Terahertz Metasurface

Angana Bhattacharya and Gagan Kumar

Frontiers in Optics 2022

Rochester, New York United States
17–20 October 2022
ISBN: 978-1-957171-17-3

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Joint Poster Session IIA (In person) (JTu5A)

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A. Bhattacharya and G. Kumar, "Slow Light Effect in a High Quality Factor Toroidal Mode in a Terahertz Metasurface," in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JTu5A.92.

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Abstract

The study reports slow light effect and steep anomalous dispersion of terahertz radiation in the vicinity of a sharp toroidal excitation. Quality factor of 89.6 is reported for the toroidal mode.

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