Frequency Up-Conversion in High-Q GaP Metasurfaces Driven by Leaky Waveguide Modes

Andrzej Joachimiak,Rocio Camacho-Morales,Lei Xu,Haizhong Zhang,Son Tung Ha,Leonid Krivitskiy,Arseniy I. Kuznetsov,Mohsen Rahmani,Dragomir Neshev

2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)（2022）

ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS) | Department of Engineering | Institute of Materials Research and Engineering

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Abstract

We demonstrate enhanced visible sum-frequency generation in doubly resonant GaP metasurfaces. Record conversion efficiency is achieved in the metasurface by the excitation of high-Q waveguide-type bound state in the continuum resonances with non-trivial polarization dependence and diffraction order control.

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Key words

conversion efficiency,diffraction order control,frequency up-conversion,leaky waveguide modes,visible sum-frequency generation,doubly resonant metasurfaces,high-Q waveguide-type bound state in the continuum resonances,nontrivial polarization dependence,GaP

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