Optically induced nonreciprocity by a plasmonic pump in semiconductor wires
Abstract
In most studies on all-optical diodes spatial asymmetry has been by necessity applied to break Lorentz reciprocity. Here we suggest a paradigm for optically induced nonreciprocity in semiconductor wires which are spatially asymmetry-free and provide a very simple and efficient platform for plasmonic devices. An azimuthal magnetic field induced by a plasmonic pump in the semiconductor wire alters the material parameters and thus results in a cross-nonlinear modulation of the plasmonic signal. Peculiarly the nonlinear wavenumber shift has opposite signs for forward and backward signals whereas Kerr or Kerr-like nonlinearity does not break Lorentz reciprocity in spatially symmetric structures. This principle may open an avenue towards highly integrated all-optical nonreciprocal devices.
Cite
@article{arxiv.2101.10076,
title = {Optically induced nonreciprocity by a plasmonic pump in semiconductor wires},
author = {Kil-Song Song and Song-Jin Im and Ji-Song Pae and Chol-Song Ri and Kum-Song Ho and Chol-Sun Kim and Yong-Ha Han},
journal= {arXiv preprint arXiv:2101.10076},
year = {2021}
}