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physics.optics2022★ 2 cited
Band Inversion Flips the Winding of Bound States in the Continuum
Paul Bouteyre, Dung Xuan Nguyen, Loïc Malgrey +10
Bound states in the continuum (BICs) in photonic slabs and metasurfaces appear as polarization singularities in momentum space, characterized by an integer winding number. This win…
physics.optics2022★ 16 cited
Analytical non-Hermitian description of Photonic Crystals with arbitrary Lateral and Transverse symmetry
X. Letartre, S. Mazauric, S. Cueff +3
In this work we propose a general theoretical approach to the modelling of complex dispersion characteristics of leaky optical modes operating in photonic crystal slab composed of…