Polarization Control via Artificial Optical Nonlinearity in Dielectric Metasurfaces
Fuyong Yue, Giacomo Balistreri, Nicola Montaut, Fabrizio Riminucci, Andrea Toma, Riccardo Piccoli, Stefano Cabrini, Roberto Morandotti, Luca Razzari
TL;DR
This paper explores how dielectric metasurfaces can control light polarization through artificial optical nonlinearity, enabling new applications in nonlinear imaging and light generation.
Contribution
The study introduces a model for designing metasurfaces with tailored third-order nonlinear optical properties, focusing on polarization control.
Findings
An effective nonlinear medium model was developed for amorphous silicon-based metasurfaces.
Quantitative values of artificial nonlinear susceptibility tensor elements were extracted.
Functional devices demonstrated control over amplitude, phase, and polarization of emitted light.
Abstract
Nonlinear optical phenomena are generally governed by geometry in matter systems, as they depend on the spatial arrangement of atoms within materials or molecules. Metasurfaces, through precisely designed geometries on a subwavelength scale, allow the optical response of a material to be tailored far beyond its natural properties. Therefore, metasurfaces are highly appealing for enabling the engineering of nonlinear optical interactions. Current studies of nonlinear metasurfaces predominantly focus on the phase control of the generated light. Nonetheless, investigating the tensorial nature of the nonlinearity of metasurfaces and its effect on the polarization of the generated light is critical to fully unlocking a range of applications, such as nonlinear vector beam generation and nonlinear polarization imaging. Here, we study the artificial optical nonlinearity of a dielectric…
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Taxonomy
TopicsMetamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Acoustic Wave Phenomena Research