Spectrally selective metasurfaces for spatially encoded light-matter coupling

Andreas Tittl

doi:10.1117/12.3016460

11 June 2024 Spectrally selective metasurfaces for spatially encoded light-matter coupling

Andreas Tittl

Proceedings Volume PC12990, Metamaterials XIV; PC1299008 (2024) https://doi.org/10.1117/12.3016460
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Photonic bound states in the continuum (BICs) have enabled a new class of spectrally selective metasurfaces supporting ultrasharp resonances, enabling breakthroughs in higher-harmonic generation, strong light-matter coupling, biodetection, and lasing. However, many implementations still face constraints related to large metasurface footprints, fabrication limits requiring constant resonator heights throughout the structure, or limited numbers of resonances. In this talk, I will present some of our recent concepts for obtaining additional nanophotonic functionalities in BIC-driven systems, including the arrangement of resonators in radial configurations for polarization invariance and reduced footprints as well as height-driven BICs for obtaining maximally chiral light-matter interactions. Finally, I will show how BIC metasurfaces with continuously varying structural parameters can be leveraged to spatially encode spectral and molecular coupling information simultaneously, enabling new perspectives for biochemical spectroscopy.

Conference Presentation

Citation Download Citation

Andreas Tittl "Spectrally selective metasurfaces for spatially encoded light-matter coupling", Proc. SPIE PC12990, Metamaterials XIV, PC1299008 (11 June 2024); https://doi.org/10.1117/12.3016460

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