Dynamic speckle patterns formed by a mixture of moving and stationary scatterers: theory and experiment

Alexander N. Serov; Wiendelt Steenbergen; Frits F. M. de Mul

doi:10.1117/12.384152

28 April 2000 Dynamic speckle patterns formed by a mixture of moving and stationary scatterers: theory and experiment

Alexander N. Serov, Wiendelt Steenbergen, Frits F. M. de Mul

Proceedings Volume 3915, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications IV; (2000) https://doi.org/10.1117/12.384152
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

Abstract

A theoretical framework is proposed for the description of the photodetector signal generated by Doppler-induced speckle fluctuations. The theory allows for predicting the power of the photo current fluctuations. It is valid for a detector of arbitrary size. The input data required for application of the theory are the angular distribution of the detected light, the fraction of Doppler shifted photons and the active detector size. The theory is based on the time domain approach to the statistics of dynamic speckle patterns on the photodetector. An experiment has been carried out to validate some aspects of our theory. The consequences of the speckle dynamics for the various modes of laser Doppler Flowmetry are discussed. As one of a practical application of the theory the fraction of Doppler- shifted photons in light back scattered from human skin has been measured in vivo. .

Citation Download Citation

Alexander N. Serov, Wiendelt Steenbergen, and Frits F. M. de Mul "Dynamic speckle patterns formed by a mixture of moving and stationary scatterers: theory and experiment", Proc. SPIE 3915, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications IV, (28 April 2000); https://doi.org/10.1117/12.384152

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