Bound states in the continuum in nanophotonics: review

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• Kirill Koshelev (The Australian National University)
• Wednesday 27 June 2018, 14:00-15:00
• Medical Physics Building G14.

If you have a question about this talk, please contact Dr Miguel Navarro-Cia.

Recently, a novel way of light confinement in unbounded photonic structures was demonstrated by means of so called bound states in the continuum (BIC) [1]. In these states, which are mathematically characterized by infinite quality factor, light is localized within the structure supporting the BIC mode, despite the mode frequency lies in the continuum part of the spectrum, therefore coexisting with the radiative leaky modes. We discuss optical and topological properties of BICs and overview recent advances in realization of devices for active, nonlinear and topological photonics, which are based on the BIC concept. We discuss how BIC localization mechanism can be used to achieve strong mode coupling and high-Q states in isolated subwavelength nanoscale resonators [2].

[1] Bound states in the continuum, C. W. Hsu, et al., Nature Reviews Materials 1 (2016); [2] High-Q supercavity modes in subwavelength dielectric resonators, M. V. Rybin, et al., Physical Review Letters 119 (2017)

This talk is part of the Metamaterials Research Group Seminars series.

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• Bham Talks
• Medical Physics Building G14
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