Speckle size and decorrelation time; space-time correlation analysis of coherent light dynamically scattered from turbid media

Vinayakrishnan Rajan, Babu Varghese, Ton van Leeuwen, Wiendelt Steenbergen

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

We report on the dependence of the decorrelation time on the spatial intensity correlation of speckles generated in the far-field by back-scattered photons from turbid media. The effects contribute to an explanation of an earlier observation that the average Doppler width of the power spectrum of detector current fluctuations depends on the size of the illuminating laser beam. The space–time correlation of the speckles generated by a particle suspension illuminated by a collimated laser beam is analyzed from serial images taken by a high speed camera. It was found that larger spatial correlation distances, associated with large speckles, exhibit a slower temporal decorrelation.
Original languageUndefined
Pages (from-to)1755-1760
Number of pages6
JournalOptics communications
Volume281
Issue number6
DOIs
Publication statusPublished - 2008

Keywords

  • IR-76412
  • METIS-247373

Cite this

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title = "Speckle size and decorrelation time; space-time correlation analysis of coherent light dynamically scattered from turbid media",
abstract = "We report on the dependence of the decorrelation time on the spatial intensity correlation of speckles generated in the far-field by back-scattered photons from turbid media. The effects contribute to an explanation of an earlier observation that the average Doppler width of the power spectrum of detector current fluctuations depends on the size of the illuminating laser beam. The space–time correlation of the speckles generated by a particle suspension illuminated by a collimated laser beam is analyzed from serial images taken by a high speed camera. It was found that larger spatial correlation distances, associated with large speckles, exhibit a slower temporal decorrelation.",
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author = "Vinayakrishnan Rajan and Babu Varghese and {van Leeuwen}, Ton and Wiendelt Steenbergen",
year = "2008",
doi = "10.1016/j.optcom.2007.11.025",
language = "Undefined",
volume = "281",
pages = "1755--1760",
journal = "Optics communications",
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publisher = "Elsevier",
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Speckle size and decorrelation time; space-time correlation analysis of coherent light dynamically scattered from turbid media. / Rajan, Vinayakrishnan; Varghese, Babu; van Leeuwen, Ton; Steenbergen, Wiendelt.

In: Optics communications, Vol. 281, No. 6, 2008, p. 1755-1760.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Speckle size and decorrelation time; space-time correlation analysis of coherent light dynamically scattered from turbid media

AU - Rajan, Vinayakrishnan

AU - Varghese, Babu

AU - van Leeuwen, Ton

AU - Steenbergen, Wiendelt

PY - 2008

Y1 - 2008

N2 - We report on the dependence of the decorrelation time on the spatial intensity correlation of speckles generated in the far-field by back-scattered photons from turbid media. The effects contribute to an explanation of an earlier observation that the average Doppler width of the power spectrum of detector current fluctuations depends on the size of the illuminating laser beam. The space–time correlation of the speckles generated by a particle suspension illuminated by a collimated laser beam is analyzed from serial images taken by a high speed camera. It was found that larger spatial correlation distances, associated with large speckles, exhibit a slower temporal decorrelation.

AB - We report on the dependence of the decorrelation time on the spatial intensity correlation of speckles generated in the far-field by back-scattered photons from turbid media. The effects contribute to an explanation of an earlier observation that the average Doppler width of the power spectrum of detector current fluctuations depends on the size of the illuminating laser beam. The space–time correlation of the speckles generated by a particle suspension illuminated by a collimated laser beam is analyzed from serial images taken by a high speed camera. It was found that larger spatial correlation distances, associated with large speckles, exhibit a slower temporal decorrelation.

KW - IR-76412

KW - METIS-247373

U2 - 10.1016/j.optcom.2007.11.025

DO - 10.1016/j.optcom.2007.11.025

M3 - Article

VL - 281

SP - 1755

EP - 1760

JO - Optics communications

JF - Optics communications

SN - 0030-4018

IS - 6

ER -