Open AccessToy model of second harmonic generation due to structuring of centrosymmetric films
Author(s) -
XU Ji-cun,
Eric Plum,
Vassili Savinov
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.408841
Subject(s) - metamaterial , second harmonic generation , planar , structuring , nonlinear system , physics , optics , nonlinear optics , dielectric , high harmonic generation , lattice (music) , electron , nonlinear optical , quantum mechanics , laser , computer science , acoustics , computer graphics (images) , finance , economics
We show how structuring of matter can lead to second order optical nonlinearity. Coulomb interactions involving bound electrons cause a nonlinear optical response at boundaries. We demonstrate that second order nonlinearity is proportional to the perimeter of a planar structure cut from a centrosymmetric lattice of harmonic oscillators. This proportionality and our model can instruct the design of dielectric nonlinear particles, surfaces and metamaterials for optical second harmonic generation.