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arXiv · 2101.09187

Third-harmonic light polarization control in magnetically-resonant silicon metasurfaces

Andrea Tognazzi·Kirill I. Okhlopkov·Attilio Zilli·Davide Rocco·Luca Fagiani·Erfan Mafakheri·Monica Bollani·Marco Finazzi·Michele Celebrano·Maxim R. Shcherbakov·Andrey A. Fedyanin·Costantino de Angelis
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Abstract

Nonlinear metasurfaces have become prominent tools for controlling and engineering light at the nanoscale. Usually, the polarization of the total generated third harmonic is studied. However, diffraction orders may present different polarizations. Here, we design an high quality factor silicon metasurface for third harmonic generation and perform back focal plane imaging of the diffraction orders, which present a rich variety of polarization states. Our results demonstrate the possibility of tailoring the polarization of the generated nonlinear diffraction orders paving the way to a higher degree of wavefront control.

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Andrea Tognazzi, Kirill I. Okhlopkov, Attilio Zilli, Davide Rocco, Luca Fagiani, Erfan Mafakheri, Monica Bollani, Marco Finazzi, Michele Celebrano, Maxim R. Shcherbakov, Andrey A. Fedyanin, Costantino de Angelis. 2021-01-22. Third-harmonic light polarization control in magnetically-resonant silicon metasurfaces. https://doi.org/10.1364/oe.419829

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