Nonlinear Chiroptical Effect in Refractory Plasmonic Molybdenum Metasurface: Chiral Saturated Absorption and Chiral Reverse Saturable Absorption

TL;DR

This paper demonstrates giant nonlinear chiroptical effects in a refractory molybdenum metasurface, enabling advanced applications like circular polarized light limiting and nonlinear chiral sensing.

Contribution

It introduces a refractory chiral molybdenum metasurface exhibiting significant nonlinear chiroptical effects, including chiral third harmonic generation and chiral saturable absorption.

Findings

Demonstrated chiral third harmonic generation

Achieved chiral saturated and reverse saturable absorption

Proposed a circular polarized light limiter

Abstract

The absorptive chiral metasurface shows evidence of giant nonlinear chiroptical effects, including chiral third harmonic generation, chiral saturated absorption, and chiral reverse saturable absorption. We finally demonstrate proof of concept circular polarized light limiter based on the refractory chiral Mo metasurface and paves the way for nonlinear chiral sensing, nonlinear hot electron generation, and XOR gate of the all-optical full-adder, showcasing the potential of refractory chiral Mo metasurfaces in overcoming the limitations of traditional chiral plasmonic materials.