A two-channel radiation-cancellation model using competing first and second Fourier harmonics enables unidirectional guided resonances near the fourth stop band without in-plane symmetry breaking or interband coupling.
Lasing action from photonic bound states in continuum,
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Unidirectional Guided Resonances Enabled by Competing Fourier Harmonics near the Fourth Stop Band
A two-channel radiation-cancellation model using competing first and second Fourier harmonics enables unidirectional guided resonances near the fourth stop band without in-plane symmetry breaking or interband coupling.