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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 3 — Feb. 29, 2012

F2Cor: fast 2-stage correlation algorithm for FCS and DLS

Emmanuel Schaub  »View Author Affiliations


Optics Express, Vol. 20, Issue 3, pp. 2184-2195 (2012)
http://dx.doi.org/10.1364/OE.20.002184


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Abstract

We present a new multiple-tau correlation algorithm which is the fastest to date. The resulting curve is identical to that obtained with the conventional multiple-tau algorithm, but the calculation time is much shorter. It combines two approaches. For short values of the lag-time a very simple correlation histogram is used, while for higher lag-time values the traditional multiple-tau bin-and-multiply approach is used. The lag-time limit between these two stages depends on the count rate. The computation time scales linearly with the count rate and is as fast as 0.1µs/photon.

© 2012 OSA

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(170.2520) Medical optics and biotechnology : Fluorescence microscopy
(070.7145) Fourier optics and signal processing : Ultrafast processing

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: November 21, 2011
Revised Manuscript: January 5, 2012
Manuscript Accepted: January 7, 2012
Published: January 17, 2012

Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Emmanuel Schaub, "F2Cor: fast 2-stage correlation algorithm for FCS and DLS," Opt. Express 20, 2184-2195 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-20-3-2184


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