多粒子的侧向散射光偏振性质分析  

Polarization property analyzing for the multiple particles' side-scattered laser radiation

作　　者：袁兴起[1] 陈延如[1] 赵琦[1] 周木春[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《仪器仪表学报》2006年第z2期1097-1098,共2页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50176020);南京理工大学科研发展基金(XKF05024)

摘　　要：分别用直径0．22μm和0．494μm的粒子与过滤的蒸馏水制成不同浓度的悬浮液作为散射粒子场,来寻求用散射光分析未知群粒子场粒子性质的新的方法。实验结果表明,多粒子散射的散射光总光强与单粒子相似,但其垂直偏振分量和水平偏振分量却随着观测面内散射角的改变而有着显著的不同变化,此结论可用于探测未知群粒子场粒子和入射光相关性质的新方法。The suspending liquid consists of various concentrations of particles which are either 0. 22μm or 0. 494μm in diameter and which are mixed into filtered, distilled water, and serve as the scattering medium for studying the new method to analyze the particle's property in the unknown multiple particle field by using the scattered radiation. The experiment results indicate that the total intensity of the radiation scattered by the multiple particles is similar to that of the single particle, but the variation of the vertical or horizontal polarization of these particles is obviously different versus the variation of the scattering angle in the observing plane. This conclusion can be used as a new method to detect the property of the multiple particles related to the incident radiation.

关 键 词：散射 偏振度 激光 

分 类 号：TH7-55[机械工程—仪器科学与技术]