Full transmission and reflection of waves propagating through a maze of disorder.
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.
ESPCI ParisTech, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, Institut Langevin, UMR 7587, 1 rue Jussieu, F-75005 Paris, France.
Benoît
B
Gérardin
ESPCI ParisTech, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, Institut Langevin, UMR 7587, 1 rue Jussieu, F-75005 Paris, France.
Jérôme
J
Laurent
ESPCI ParisTech, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, Institut Langevin, UMR 7587, 1 rue Jussieu, F-75005 Paris, France.
Arnaud
A
Derode
ESPCI ParisTech, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, Institut Langevin, UMR 7587, 1 rue Jussieu, F-75005 Paris, France.
Claire
C
Prada
ESPCI ParisTech, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, Institut Langevin, UMR 7587, 1 rue Jussieu, F-75005 Paris, France.
Alexandre
A
Aubry