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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 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.

SUBMITTER: Makris KG

PROVIDER: S-EPMC6062329 | biostudies-other | 2017 Sep

REPOSITORIES: biostudies-other

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Wave propagation through disordered media without backscattering and intensity variations.

Makris Konstantinos G KG Brandstötter Andre A Ambichl Philipp P Musslimani Ziad H ZH Rotter Stefan S

Light, science & applications 20170908 9

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 waves in such non-Hermitian scattering landscapes are free of any backscattering and feature perfect transmission through the disorder. An experimental demonstration o ...[more]

PMID: 30167289

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