多粒子场侧向散射总光强性质研究  

Total Intensity Property for Multiple Particles Side-Scattered Laser Radiation

作　　者：袁兴起[1] 高文英[1] 张明军[1] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《激光与光电子学进展》2011年第7期160-162,共3页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(50176020);河南省重点学科基金(509916);河南理工大学博士基金(B2008-63)资助课题

摘　　要：对线偏振光入射到群体粒子场时侧向散射光的总光强特性进行了实验研究，散射介质为直径分别为0．065，0．123，0．220，0．360，0．494和1．240gm的粒子与过滤的蒸馏水所构成的不同体积分数的悬浮液。研究结果表明，粒子侧向散射光的总光强相对散射角的变化，受粒子直径变化影响较大，且其变化程度随粒子直径的减小（1．240～0．123肿）而变得更明显；而当粒子直径进一步减小时（0．123～0．065μm），则此变化又趋于平缓。而总散射光强相对散射角的变化受粒子浓度和探测深度的影响则很小，没有粒子直径变化的影响大，但在探测平面内总散射光强相对散射角始终呈现对称分布的特性。The properties of the total intensity of radiation side-scattered by the multiple particles when using linearly polarized incident light are studied experimentally. The scattering medium is the suspending liquid consisting of various concentrations of particles which are 0. 065, 0. 123, 0. 220, 0. 360, 0. 494 or 1. 240 μm in diameter and mixed into filtered, distilled water. The experimental results show that the influence of various diameters of particles on the intensity of total side-scattered light is obvious in relation to scattering angles. The change of the intensity is greater when the diameters of the particles are reduced （1. 240-0. 123 μm）. When the diameters reduce further （0. 123-0.065 μm）, the change has slowed down. The influence of the particle concentration and the depths on the total intensity is minute, not as obvious as the influence of the change of the diameters of the particles. And in the detected plane, the intensity distribution of each component of the side-scattered light is angular-symmetric.

关 键 词：物理光学 线偏振光 侧向散射 光强 激光 

分 类 号：O436.2[机械工程—光学工程]