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Article
Position-Dependent Diffusion of Light in Disordered Waveguides
Physical Review Letters
  • Alexey Yamilov, Missouri University of Science and Technology
  • Raktim Sarma
  • Brandon Redding
  • Ben Payne
  • Heeso Noh
  • Hui Cao
Abstract

We present direct experimental evidence for position-dependent diffusion in open random media. The interference of light in time-reversed paths results in renormalization of the diffusion coefficient, which varies spatially. To probe the wave transport inside the system, we fabricate two-dimensional disordered waveguides and monitor the light intensity from the third dimension. Change the geometry of the system or dissipation limits the size of the loop trajectories, allowing us to control the renormalization of the diffusion coefficient. This work shows the possibility of manipulating wave diffusion via the interplay of localization and dissipation.

Department(s)
Physics
Keywords and Phrases
  • Disordered Waveguides,
  • Experimental Evidence,
  • Light Intensity,
  • Random Media,
  • Renormalization,
  • Time-reversed,
  • Wave Diffusion,
  • Wave Transport,
  • Diffusion,
  • Waveguides,
  • Two Dimensional
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2014 American Physical Society (APS), All rights reserved.
Publication Date
1-1-2014
Disciplines
Citation Information
Alexey Yamilov, Raktim Sarma, Brandon Redding, Ben Payne, et al.. "Position-Dependent Diffusion of Light in Disordered Waveguides" Physical Review Letters Vol. 112 Iss. 2 (2014) p. 023904-1 - 023904-5 ISSN: 0031-9007
Available at: http://works.bepress.com/alexey-yamilov/102/