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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 11 — Jun. 1, 2014
  • pp: 3348–3351

Phase singularity diffusion

Xiaojun Cheng, Yitzchak Lockerman, and Azriel Z. Genack  »View Author Affiliations


Optics Letters, Vol. 39, Issue 11, pp. 3348-3351 (2014)
http://dx.doi.org/10.1364/OL.39.003348


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Abstract

We follow the trajectories of phase singularities at nulls of intensity in the speckle pattern of waves transmitted through random media as the frequency of the incident radiation is scanned in microwave experiments and numerical simulations. Phase singularities are observed to diffuse with a linear increase of the square displacement R2 with frequency shift. The product of the diffusion coefficient of phase singularities in the transmitted speckle pattern and the photon diffusion coefficient through the random medium is proportional to the square of the effective sample length. This provides the photon diffusion coefficient and a method for characterizing the motion of dynamic material systems.

© 2014 Optical Society of America

OCIS Codes
(030.6600) Coherence and statistical optics : Statistical optics
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media

ToC Category:
Scattering

History
Original Manuscript: March 17, 2014
Revised Manuscript: April 28, 2014
Manuscript Accepted: April 30, 2014
Published: May 30, 2014

Virtual Issues
Vol. 9, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Xiaojun Cheng, Yitzchak Lockerman, and Azriel Z. Genack, "Phase singularity diffusion," Opt. Lett. 39, 3348-3351 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-11-3348

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