Spatio-temporal visualization of light transport in complex photonic structures

Year: 2016

Authors: Pattelli L., Savo R., Burresi M., Wiersma DS.

Autors Affiliation: Univ Firenze, European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy; CNR, INO, I-50125 Florence, FI, Italy; Univ Firenze, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, FI, Italy; Univ Paris 06, Coll France, Ecole Normale Super, Lab Kastler Brossel,CNRS,UMR 8552, 24 Rue Lhomond, F-75005 Paris, France; Gestione SILO Srl, Via Castelpulci 14-D, I-50010 Scandicci, FI, Italy.

Abstract: Spatio-temporal imaging of light propagation is very important in photonics because it provides the most direct tool available to study the interaction between light and its host environment. Sub-ps time resolution is needed to investigate the fine and complex structural features that characterize disordered and heterogeneous structures, which are responsible for a rich array of transport physics that have not yet been fully explored. A newly developed wide-field imaging system enables us to present a spatio-temporal study on light transport in various disordered media, revealing properties that could not be properly assessed using standard techniques. By extending our investigation to an almost transparent membrane, a configuration that has been difficult to characterize until now, we unveil the peculiar physics exhibited by such thin scattering systems with transport features that go beyond mainstream diffusion modeling, despite the occurrence of multiple scattering.

Journal/Review: LIGHT-SCIENCE & APPLICATIONS

Volume: 5      Pages from: e16090-1  to: e16090-9

More Information: Authors wish to thank G Mazzamuto, F Utel and J Bertolotti for technical assistance and T Svensson, E Alerstam, S Gigan and P Wasylczyk for fruitful discussions. This work is financially supported by the European Network of Excellence Nanophotonics for Energy Efficiency and the ERC through the Advanced Grant PhotBots (Proj. Ref. 291349).
KeyWords: Diffusive approximation; Disordered media; Light transport; Optical gatings; Wide field imaging; Light transmission
DOI: 10.1038/lsa.2016.90

Citations: 21
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