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Full Paper
Engineering Disorder in Superdiffusive Lévy Glasses
Article first published online: 22 FEB 2010
DOI: 10.1002/adfm.200902008
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Bertolotti, J., Vynck, K., Pattelli, L., Barthelemy, P., Lepri, S. and Wiersma, D. S. (2010), Engineering Disorder in Superdiffusive Lévy Glasses. Advanced Functional Materials, 20: 965–968. doi: 10.1002/adfm.200902008
Publication History
- Issue published online: 22 MAR 2010
- Article first published online: 22 FEB 2010
- Manuscript Received: 26 OCT 2009
- Abstract
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Keywords:
- diffusion;
- disorder;
- Lévy glasses;
- light transport;
- optical materials
Graphical Abstract
Typical disordered optical materials are known to lead to normal diffusive light transport. This article proposes a novel method to realize disordered dielectric samples in which light propagates superdiffusively. This unique feature is obtained by creating power-law spatial inhomogeneities in the density of light scatterers.
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 Lévy 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 Lévy glasses is given and the signature of superdiffusion on the transmission profile in a slab configuration is shown experimentally.