TY - JOUR
T1 - Determination of particle size by using the angular distribution of backscattered light as measured with low-coherence interferometry
AU - Wax, Adam
AU - Yang, Changhuei
AU - Backman, Vadim
AU - Kalashnikov, Maxim
AU - Dasari, Ramachandra R.
AU - Feld, Michael S.
PY - 2002/4
Y1 - 2002/4
N2 - We employ a novel interferometer to measure the angular distribution of light backscattered by a turbid medium. Through comparison of the measured data with the predictions of Mie theory, we are able to determine the size of the scatterers comprising the medium with subwavelength precision. As the technique is based on low-coherence interferometry, we are able to examine the evolution of the angular distribution of scattered light as it propagates into the medium. The effects of multiple scattering as a function of penetration depth in the medium are analyzed. We also present various considerations for extending this technique to determining structural information in biological tissues, such as the effects of a distribution of particle sizes and the need to average out speckle contributions.
AB - We employ a novel interferometer to measure the angular distribution of light backscattered by a turbid medium. Through comparison of the measured data with the predictions of Mie theory, we are able to determine the size of the scatterers comprising the medium with subwavelength precision. As the technique is based on low-coherence interferometry, we are able to examine the evolution of the angular distribution of scattered light as it propagates into the medium. The effects of multiple scattering as a function of penetration depth in the medium are analyzed. We also present various considerations for extending this technique to determining structural information in biological tissues, such as the effects of a distribution of particle sizes and the need to average out speckle contributions.
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U2 - 10.1364/JOSAA.19.000737
DO - 10.1364/JOSAA.19.000737
M3 - Article
C2 - 11934166
AN - SCOPUS:0036546728
SN - 1084-7529
VL - 19
SP - 737
EP - 744
JO - Journal of the Optical Society of America A: Optics and Image Science, and Vision
JF - Journal of the Optical Society of America A: Optics and Image Science, and Vision
IS - 4
ER -