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Rigorous coupled-wave analysis for the bound states in the continuum and the guided modes below the light cone

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Abstract

We extend the rigorous coupled-wave analysis to the simulation of bound states in the continuum and the fully guided modes. This is achieved by using non-physical evanescent waves as input channels, analytic continuation of the scattering matrix to the full complex frequency plane, and analytic continuation of incident angles to complex numbers.

© 2023 The Author(s)

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