Abstract
Nonlinear nanophotonics has been attracting tremendous attention due to its vast applications in sensing, optical microscopy, and quantum photon source generation. Nonlinear metesurfaces have been recognised as a potential substitute for commercial IR imaging and spectroscopy detectors because of their superiority of being ultra-compact, and containing fewer components for signal conversion [1]. Here, we propose silicon membrane metasurfaces with smaller unit-cell sizes (Fig. 1a) to enhance local light confinement and to increase the conversion efficiency and spatial resolution of the third-harmonic generation (THG) in IR imaging applications [2].
© 2023 IEEE
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