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Skipetrov SE, Peuser J, Cerbino R, et al. Noise in laser speckle correlation and imaging techniques. Opt Express. 2010;18(14):14519-34doi: 10.1364/OE.18.014519.
Skipetrov, S. E., Peuser, J., Cerbino, R., Zakharov, P., Weber, B., & Scheffold, F. (2010). Noise in laser speckle correlation and imaging techniques. Optics express, 18(14), 14519-34. https://doi.org/10.1364/OE.18.014519
Skipetrov, S E, et al. "Noise in laser speckle correlation and imaging techniques." Optics express vol. 18,14 (2010): 14519-34. doi: https://doi.org/10.1364/OE.18.014519
Skipetrov SE, Peuser J, Cerbino R, Zakharov P, Weber B, Scheffold F. Noise in laser speckle correlation and imaging techniques. Opt Express. 2010 Jul 05;18(14):14519-34. doi: 10.1364/OE.18.014519. PMID: 20639937.
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Opt Express. 2010 Jul 05;18(14):14519-34. doi: 10.1364/OE.18.014519.

Noise in laser speckle correlation and imaging techniques.

Optics express

S E Skipetrov, J Peuser, R Cerbino, P Zakharov, B Weber, F Scheffold

Affiliations

  1. Laboratoire de Physique et Modélisation des Milieux Condensés, Université Joseph Fourier and CNRS, 25 rue des Martyrs, 38042 Grenoble, France.

PMID: 20639937 DOI: 10.1364/OE.18.014519

Abstract

We study the noise of the intensity variance and of the intensity correlation and structure functions measured in light scattering from a random medium in the case when these quantities are obtained by averaging over a finite number N of pixels of a digital camera. We show that the noise scales as 1/N in all cases and that it is sensitive to correlations of signals corresponding to adjacent pixels as well as to the effective time averaging (due to the finite integration time) and spatial averaging (due to the finite pixel size). Our results provide a guide to estimation of noise levels in such applications as multi-speckle dynamic light scattering, time-resolved correlation spectroscopy, speckle visibility spectroscopy, laser speckle imaging etc.

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