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Photonic Flatband Resonances in Multiple Light Scattering

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posted on 2023-06-02, 16:01 authored by Thanh Xuan Hoang, Daniel Leykam, Yuri Kivshar
We introduce the concept of photonic flatband resonances for the example of an array of high index dielectric particles. We employ the multiple Mie scattering theory and reveal that both short range and long range interactions between the resonators are crucial for the emerging collective resonances and their associated photonic flatbands. By examining both nearfield and far field characteristics, we uncover how the flatbands emerge due to fine tuning of resonators radiation fields, and predict that hybridization of a flatband resonance with an electric hotspot can lead to giant values of the Purcell factor for the electric dipolar emitters.

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