Journal
OPTICS LETTERS
Volume 33, Issue 24, Pages 2886-2888Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.33.002886
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Through a series of simulations and experiments, we demonstrate that the frequently cited criterion of matching speckle size to detector element (pixel) size in laser speckle contrast imaging (LSCI) has the detrimental effect of reducing the contrast and thereby decreasing the variation in the laser speckle contrast image. Unlike quasi-elastic light scattering, where this matching condition has been shown to maximize the signal-to-noise ratio, in LSCI, the minimum speckle size must exceed the Nyquist criterion in order to maximize the contrast of the speckle patterns. (C) 2008 Optical Society of America
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