Wave propagation through disordered media without backscattering and intensity variations
Abstract
A fundamental manifestation of wave scattering in a disordered medium is the highly complex intensity pattern the waves acquire due to multi-path interference. Here we show that these intensity variations can be entirely suppressed by adding disorder-specific gain and loss components to the medium. The resulting constant-intensity (CI) waves in such non-Hermitian scattering landscapes are free of any backscattering and feature perfect transmission through the disorder. An experimental demonstration of these unique wave states is envisioned based on spatially modulated pump beams that can flexibly control the gain and loss components in an active medium.
Cite
@article{arxiv.1612.03070,
title = {Wave propagation through disordered media without backscattering and intensity variations},
author = {Konstantinos G. Makris and Andre Brandstötter and Philipp Ambichl and Ziad H. Musslimani and Stefan Rotter},
journal= {arXiv preprint arXiv:1612.03070},
year = {2017}
}
Comments
34 pages, 4 figures, including a supplemental material section; see also conference paper for Frontiers in Optics 2016 (doi.org/10.1364/FIO.2016.JTh2A.4), submitted on 25th of May, 2016