Paradigms for engineering degenerate bound states in the continuum and identifying super-Mossian materials

Chloe Doiron

doi:10.1117/12.2677882

4 October 2023 Paradigms for engineering degenerate bound states in the continuum and identifying super-Mossian materials

Chloe Doiron

Author Affiliations +

Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC126461J (2023) https://doi.org/10.1117/12.2677882
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

This talk will discuss two methods to improve all-dielectric metasurfaces. The first method is a structural design paradigm based on lattices with six-fold rotation symmetry to create symmetry-guaranteed pairs of bound states in the continuum (BICs) for controlling mode splitting and quality-factors. The second method is centered around a search heuristic for identifying super-Mossian materials with refractive indices that surpass the common form of the Moss rule. This discussion will present results from an experimental realization of a super-Mossian metasurface using iron pyrite with a refractive index greater than 4.37 and a bandgap of 1.03 eV. *Work supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (grant BES 20-017574). The work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the US Department of Energy, Office of Science. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc., for the US Department of Energy's National Nuclear Security Administration under contract DE-NA0003525. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the US Department of Energy or the United States government.

Conference Presentation

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Chloe Doiron "Paradigms for engineering degenerate bound states in the continuum and identifying super-Mossian materials", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC126461J (4 October 2023); https://doi.org/10.1117/12.2677882

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KEYWORDS

Engineering

Laboratories

Polarization control

Refractive index

Light-matter interactions

Materials science

Nanotechnology

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