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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 15 — Aug. 1, 2013
  • pp: 2714–2716

Focusing through random media in space and time: a transmission matrix approach

Zhou Shi, Matthieu Davy, Jing Wang, and Azriel Z. Genack  »View Author Affiliations

Optics Letters, Vol. 38, Issue 15, pp. 2714-2716 (2013)

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We exploit the evolution in time of the transmission matrix following pulse excitation of a random medium to focus radiation at a selected time delay t and position r. The temporal profile of a focused microwave pulse is the same as the incident Gaussian pulse. The contrast in space at time t of the focused wave is determined by the participation number of transmission eigenvalues M and the size N of the measured transmission matrix. The initial rise and subsequent decay of the contrast observed reflect the distribution of decay rates of the quasi-normal modes within the sample.

© 2013 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media

ToC Category:

Original Manuscript: May 7, 2013
Manuscript Accepted: June 19, 2013
Published: July 23, 2013

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

Zhou Shi, Matthieu Davy, Jing Wang, and Azriel Z. Genack, "Focusing through random media in space and time: a transmission matrix approach," Opt. Lett. 38, 2714-2716 (2013)

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