Full transmission and reflection of waves propagating through a maze of disorder

Abstract

Thirty years ago, theorists showed that a properly designed combination of incident waves could be fully transmitted through (or reflected by) a disordered medium, based on the existence of propagation channels which are essentially either closed or open (bimodal law). In this Letter, we study elastic waves in a disordered waveguide and present direct experimental evidence of the bimodal law. Full transmission and reflection are achieved. The wave field is monitored by laser interferometry and highlights the interference effects that take place within the scattering medium.

5 pages, 3 figures

References in corpus (2)

• Universal optimal transmission of light through disordered materials
• Generating particle-like scattering states in wave transport

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• Pathlengths of open channels in multiple scattering media
• Getting beneath the surface of opaque media: universal structure of transmission eigenchannels