Second-Order Nonlinear Circular Dichroism in Square Lattice Array of Germanium Nanohelices
Second-harmonic generation (SHG) is prohibited in centrosymmetric crystals such as silicon
or germanium due to the presence of inversion symmetry. However, the structuring of such …
or germanium due to the presence of inversion symmetry. However, the structuring of such …
Achiral nanostructures: perturbative harmonic generation and dichroism under vortex and vector beams illumination
A Nikitina, K Frizyuk - Advanced Optical Materials, 2024 - Wiley Online Library
In this study, the nonlinear optical phenomena emerging from the interaction between vortex
and vector beams and achiral nanoparticles or nanostructures are investigated. Despite the …
and vector beams and achiral nanoparticles or nanostructures are investigated. Despite the …
Enhanced intrinsic chiroptical response of resonant metallic metasurfaces
The physics of resonant metasurfaces underpins many electromagnetic functionalities with
enhanced performance by virtue of resonant excitations. Resonances originating from …
enhanced performance by virtue of resonant excitations. Resonances originating from …
Chiral dichroism in resonant metasurfaces with monoclinic lattices
We reveal that chiral response can be achieved in resonant metasurfaces with a monoclinic
lattice symmetry (the so-called Bravais oblique lattices) where the mirror symmetry is broken …
lattice symmetry (the so-called Bravais oblique lattices) where the mirror symmetry is broken …