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Conferences > CLEO_QELS > 2022 > FF4N > FF4N.6

Nonlinearity-Induced Nonreciprocity in Passive Silicon Gratings Supporting Quasi-Bound States in the Continuum

Michele Cotrufo, Andrea Cordaro, Albert Polman, and Andrea Alù

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Abstract

Optical nonlinearities, combined with structural asymmetry, can break reciprocity and realize devices that transmit light asymmetrically. We show the first experimental implementation of this concept for free-space radiation, using silicon metasurfaces supporting asymmetric quasi-bound states.

© 2022 The Author(s)

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