Suppression of Anderson localization in disordered metamaterials.
We study wave propagation in mixed, 1D disordered stacks of alternating right- and left-handed layers and reveal that the introduction of metamaterials substantially suppresses Anderson localization. At long wavelengths, the localization length in mixed stacks is orders of magnitude larger than for normal structures, proportional to the sixth power of the wavelength, in contrast to the usual quadratic wavelength dependence of normal systems. Suppression of localization is also exemplified in long-wavelength resonances which largely disappear when left-handed materials are introduced.
Asatryan
Ara A
AA
Department of Mathematical Sciences and Center for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), University of Technology, Sydney, NSW, Australia.
Botten
Lindsay C
LC
Byrne
Michael A
MA
Freilikher
Valentin D
VD
Gredeskul
Sergey A
SA
Shadrivov
Ilya V
IV
McPhedran
Ross C
RC
Kivshar
Yuri S
YS