Engineering Disorder in Superdiffusive Levy Glasses

Year: 2010

Authors: Bertolotti J., Vynck K., Pattelli L., Barthelemy P., Lepri S., Wiersma D.

Autors Affiliation: European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy; CNR, BEC, I-50019 Sesto Fiorentino, FI, Italy; CNR, Ist Sistemi Complessi, I-50019 Sesto Fiorentino, FI, Italy

Abstract: Disorder is known to have a substantial impact on light transport in optical materials. In particular, when properly tuned, disorder can unveil optical properties that common, periodically patterned materials do not possess. In this paper, a method to realize disordered dielectric materials dubbed Levy glasses, in which light transport is superdiffusive, is presented. The degree of superdiffusion is set by engineering the spatial inhomogeneity of the scatterer density in the material. A model that relates the microscopic parameters to the macroscopic transport properties of Levy glasses is given and the signature of superdiffusion on the transmission profile in a slab configuration is shown experimentally.

Journal/Review: ADVANCED FUNCTIONAL MATERIALS

Volume: 20 (6)      Pages from: 965  to: 968

More Information: The authors thank LENS for support via the project Laserlab 212025. SL aknowledges partial support by the CNR RSTL project N. 827 Dinamiche cooperative in strutture quasi uni-dimensionali. The authors thank P. D. Garcia for useful discussion.
KeyWords: Disordered dielectrics; Light transport; Macroscopic transport; Microscopic parameter; Patterned materials; Spatial in-homogeneity; Superdiffusion; Transmission profiles, Glass; Optical properties; Transport properties, Dielectric materials
DOI: 10.1002/adfm.200902008

Citations: 48
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