31 May 2001 Speckles in laser Doppler blood flowmetry
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Abstract
In this work we are going to discuss a role of speckles in laser-Doppler. Despite the speckle approach and laser Doppler were developed separately the both are used to describe the phenomena of the intensity oscillations on the photodetector caused by dynamic light scattering. Actually, those techniques are used when an information about the velocity of moving object must be obtained. Recently it was noticed by David Briers that finally both techniques give the same quantitative answer and might be integrated in one approach having advantages of both. By this work we tried to extend the speckle approach to the work on laser Doppler. We will show our own way in which the both approaches could be integrated in one. The contents of the presentation: first a short introduction into the subject will be done and main goals of the work will be pointed out. Then we will overview shortly two interferometric methods, laser-Doppler and time-varying speckle, trying to find what are the similarities and distinctions between of those. Next, our theoretical framework on integrating of two techniques in one will be proposed. We will show you some experimental validation of our approach and a possible practical application of the one. And finally, conclusion and summary.
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Alexander N. Serov, Wiendelt Steenbergen, Frits F. M. de Mul, "Speckles in laser Doppler blood flowmetry", Proc. SPIE 4242, Saratov Fall Meeting 2000: Coherent Optics of Ordered and Random Media, (31 May 2001); doi: 10.1117/12.427759; https://doi.org/10.1117/12.427759
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