利用圆偏振光和线偏振光在浑浊介质中进行后向散射目标检测。

Backscattering target detection in a turbid medium by use of circularly and linearly polarized light.

作者信息

Kartazayeva S A, Ni Xiaohui, Alfano R R

机构信息

Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, City College of New York, Graduate School of City University of New York, New York, New York 10031, USA.

出版信息

Opt Lett. 2005 May 15;30(10):1168-70. doi: 10.1364/ol.30.001168.

DOI:10.1364/ol.30.001168

PMID:15943299

Abstract

The polarization properties of the backscattered light from a turbid medium containing large-diameter (10.143-microm) and small-diameter (0.202-microm) spherical polystyrene particles are studied. It is shown that the difference in the polarization properties of the emerging light that originates at the target and that is backscattered from the medium allows for improvement of image contrast by use of polarized light. Based on the images obtained by the CCD camera, the polarization memory effect with circularly polarized light is demonstrated to have an advantage over the linear polarization technique in imaging a highly reflective target inside a turbid medium containing large particles.

摘要

研究了含有大直径（10.143微米）和小直径（0.202微米）球形聚苯乙烯颗粒的混浊介质后向散射光的偏振特性。结果表明，源自目标并从介质后向散射的出射光的偏振特性差异，使得利用偏振光可提高图像对比度。基于电荷耦合器件（CCD）相机获取的图像，证明了在对含有大颗粒的混浊介质内部的高反射目标进行成像时，圆偏振光的偏振记忆效应优于线偏振技术。