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31 May 2002 Speckle contrast measurements with changeable coherence length: the method of scattering media probing
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Abstract
We tried to probe photon path statistics by analyzing the change of speckle contrast with different coherence length of source. The speckle contrast is strong function of both photon path statistics inside scattering media and coherence function of a source. By introducing explicit formula for speckle contrast, we can relate photon path statistics with measured speckle contrast and coherence of source in reverse manner. To realize this idea, we formulated this relationship and performed several MC simulations and basic experiments for various scattering media. Although the present result is very rough, it shows some possibility of using this method to find photon propagation statistics inside turbid media such as tissues and thin polymer film.
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Jung-Taek Oh, Dmitry A. Zimnyakov, and Garif G. Akchurin "Speckle contrast measurements with changeable coherence length: the method of scattering media probing", Proc. SPIE 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II, (31 May 2002); https://doi.org/10.1117/12.469002
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