Year: 2024
Type: article
Abstract: Nonlinear chiral photonics explores the nonlinear response of chiral structures, and it offers a pathway to novel optical functionalities not accessible through linear or achiral systems. Here we present the first application of nanostructured van der Waals materials to nonlinear chiral photonics. We demonstrate the 3 orders of magnitude enhancement of the third-harmonic generation from hBN metasurfaces driven by quasi-bound states in the continuum and accompanied by strong nonlinear circular dichroism at the resonances. This novel platform for chiral metaphotonics can be employed for achieving large circular dichroism combined with high-efficiency harmonic generation in a broad frequency range.
Source: Nano Letters
Institution: Australian National University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: Metaphotonics and metasurfaces for disruptive sensing technologies, G3080515105, Cryogenic Near-Field Imaging and Spectroscopy Facility at the 10-nm-Scale, Generating Highly Entangled Photons from Nonlinear Monolayer Domes, Harnessing Interlayer Biexcitons in Atomically Thin Heterostructures
OpenAlex ID: W4401635786