Chiral emission from perovskite metasurfaces via chiral quasi-bound states in the continuum

Young Chul Jun

doi:10.1117/12.2676555

4 October 2023 Chiral emission from perovskite metasurfaces via chiral quasi-bound states in the continuum

Young Chul Jun

Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC1264611 (2023) https://doi.org/10.1117/12.2676555
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Chiral nanophotonic structures can significantly enhance the chiral optical responses. However, achieving extreme chirality remains challenging. Here, chiral quasi-bound states in the continuum are realized in the visible range by controlling the etching depths in the substrate and inducing out-of-plane symmetry breaking. An extremely high level of chiral emission from a perovskite metasurface is experimentally achieved in the normal direction. Chiral emission is maximally enhanced for one helicity via critical coupling while strongly suppressed for the other helicity. Approaching the ultimate limit of chiral interactions may lead to far-reaching consequences in a variety of important applications.

Conference Presentation

Citation Download Citation

Young Chul Jun "Chiral emission from perovskite metasurfaces via chiral quasi-bound states in the continuum", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC1264611 (4 October 2023); https://doi.org/10.1117/12.2676555

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