混浊介质线偏振入射光180°后向散射特性参数的测定  

Measurement about Turbid Media 180 Degree Back Scattering Characteristic Parameters for Linear-polarized Incident Light

作　　者：张大伟[1] 李国华[1] 

机构地区：[1]曲阜师范大学激光研究所,山东曲阜273165

出　　处：《中国激光》2002年第12期1113-1116,共4页Chinese Journal of Lasers

摘　　要：利用生物组织等混浊介质偏振入射光的 180°后向散射特性 ,可以反映该介质的内部结构信息。介绍了把混浊介质“黑箱化” ,用旋光度α ,保偏度 β ,反射率r来表征这种散射特性 ,设计了测定特性参数的实验系统 ,并对不同浓度的牛奶的去离子水溶液进行了测定 ,当浓度为 2 5 %时 ,α =3°,β=0 .15 ,r =0 .0 9。改变样品的浓度 ,3个参数也发生不同程度的改变。The 180 degree back scattering character of biologic tissue and other turbid mediae can reflect the media′s information inside. Regarding turbid media as a 'Black-box', the back scattering characteristic parameters for linear-polarized light in trubid media can be expressed by a polarization plane rotation angle α, polarization maintaining factor β and reflectivity r. A schematic of the measurement about the characteristic parameter was designed. And the milk′s deionized water solutions with different concentration were measured. When the concentration is 25%, α=3°, β=0 15, r=0 09. When the solution′s concentration is changed, the three parameters will be changed, too.

关 键 词：混浊介质 后向散射 米勒矩阵 生物组织 

分 类 号：O436.2[机械工程—光学工程]