Scientific Results

Light Transport and Localization in Two-Dimensional Correlated Disorder

Year: 2014

Authors: Conley G. M., Burresi M., Pratesi F., Vynck K., Wiersma D.

Autors Affiliation: European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy;
Physics Department, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland;
National Institute of Optics (CNR-INO), Largo Fermi 6, 50125 Florence, Italy;
Institut Langevin, ESPCI ParisTech, CNRS, 1 rue Jussieu, 75238 Paris Cedex 05, France

Abstract: Structural correlations in disordered media are known to affect significantly the propagation of waves. In this Letter, we theoretically investigate the transport and localization of light in 2D photonic structures with short-range correlated disorder. The problem is tackled semianalytically using the Baus-Colot model for the structure factor of correlated media and a modified independent scattering approximation. We find that short-range correlations make it possible to easily tune the transport mean free path by more than a factor of 2 and the related localization length over several orders of magnitude. This trend is confirmed by numerical finite-difference time-domain calculations. This study therefore shows that disorder engineering can offer fine control over light transport and localization in planar geometries, which may open new opportunities in both fundamental and applied photonics research.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 112 (14)      Pages from: 143901  to: 143901

More Information: This work is supported by the Italian National Research Council (CNR) through the \”EFOR\” project, and the LABEX WIFI (Laboratory of Excellence within the French Program \”Investments for the Future\”) under references ANR-10-LABX-24 and ANR-10-IDEX-0001-02 PSL*. The research leading to these results has received funding from the European Research Council under the European Union\’s Seventh Framework Programme (FP7/2007-2013) / ERC grant agreement No. [291349].
KeyWords: Finite difference time domain method; Time domain analysis, Correlated disorder; Finite-difference time-domain calculations; Independent scattering; Propagation of waves; Short-range correlated disorder; Short-range correlations; Structural correlation; Transport mean free path, Light transmission, anisotropy; article; light; methodology; optics; photon; radiation scattering; theoretical model, Anisotropy; Light; Models, Theoretical; Optics and Photonics; Photons; Scattering, Radiation
DOI: 10.1103/PhysRevLett.112.143901

Citations: 40
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