Determination of particle size by using the angular distribution of backscattered light as measured with low-coherence interferometry

被引：64

作者：

Wax, A ^{[1
]}

Yang, CH ^{[1
]}

Backman, V ^{[1
]}

Kalashnikov, M ^{[1
]}

Dasari, RR ^{[1
]}

Feld, MS ^{[1
]}

机构：

[1] MIT, George R Harrison Spect Lab, Cambridge, MA 02139 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2002年 / 19卷 / 04期

关键词：

D O I：

10.1364/JOSAA.19.000737

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2002 Optical Society of America.

引用

页码：737 / 744

页数：8

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