TY - JOUR
T1 - Dynamic multiple scattering
T2 - Ballistic photons and the breakdown of the photon-diffusion approximation
AU - Freund, Isaac
AU - Kaveh, Moshe
AU - Rosenbluh, Michael
PY - 1988
Y1 - 1988
N2 - We find experimentally that in the forward direction the length scale of quasiballistic photons dominates the dynamic intensity-intensity correlation function of light multiply scattered from randomly diffusing spheres. This implies a breakdown of the photon-diffusion approximation, which is characterized by a single length, the transport mean free path. We suggest why this breakdown occurs, introduce phenomenologically a dynamic correlation length as an additional length scale, and with this extension reconcile the theory with experiment.
AB - We find experimentally that in the forward direction the length scale of quasiballistic photons dominates the dynamic intensity-intensity correlation function of light multiply scattered from randomly diffusing spheres. This implies a breakdown of the photon-diffusion approximation, which is characterized by a single length, the transport mean free path. We suggest why this breakdown occurs, introduce phenomenologically a dynamic correlation length as an additional length scale, and with this extension reconcile the theory with experiment.
UR - http://www.scopus.com/inward/record.url?scp=0000632614&partnerID=8YFLogxK
U2 - 10.1103/physrevlett.60.1130
DO - 10.1103/physrevlett.60.1130
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AN - SCOPUS:0000632614
SN - 0031-9007
VL - 60
SP - 1130
EP - 1133
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
ER -