Third-order nonlinearity by the inverse Faraday effect in planar magnetoplasmonic structures
Abstract
We predict a new type of ultrafast third-order nonlinearity of surface plasmon polaritons (SPP) in planar magneto-plasmonic structures caused by the inverse Faraday effect (IFE). Planar SPPs with a significant longitudinal component of the electric field act via the IFE as an effective transverse magnetic field. Its response to the plasmon propagation leads to strong ultrafast self-action which manifests itself through a third-order nonlinearity. We derive a general formula and analytical expressions for the IFE-related nonlinear susceptibility for two specific planar magneto-plasmonic structures from the Lorentz reciprocity theorem. Our estimations predict a very large nonlinear third-order nonlinear susceptibility exceeding those of typical metals such as gold.
Cite
@article{arxiv.1807.06961,
title = {Third-order nonlinearity by the inverse Faraday effect in planar magnetoplasmonic structures},
author = {Song-Jin Im and Chol-Song Ri and Kum-Song Ho and Joachim Herrmann},
journal= {arXiv preprint arXiv:1807.06961},
year = {2018}
}