Lithium-Niobate-Based Cavity Resonator-Integrated Guided-Mode Resonance Filters

Active and nonlinear metasurfaces have recently attracted a lot of attention for the opportunities they promise such as the introduction of all-optical reconfigurable beam shaping and control with no moving parts [1]. In this context, all-dielectric gratings in the form of Guided Mode Resonant Filters (GMRFs) have been shown to enhance nonlinear interactions by several orders of magnitude over bulk layers [2][3]. Nevertheless, the narrow angular and spectral acceptance of GMRFs and the weakly-nonlinear materials used in these demonstrations may restrict their use in more advanced applications.