Marron J C, Schroeder K S
Appl Opt. 1988 Oct 15;27(20):4279-87. doi: 10.1364/AO.27.004279.
Dynamic speckle from rough rotating objects with nonplanar underlying shape is considered in theory and experiment. The theoretical treatment is based on modeling the optical field as a sum of contributions from discrete scatterers on the surface of the object. It follows that computation of the speckle correlation function requires knowledge of the object's average scattering strength as a function of position and the underlying shape of the object. Calculation of the speckle correlation function reduces to tracing a series of rays that coarsely sample the object and for each ray computing the relative phase shift resulting from object rotation. This method is quite simple compared to previous analytic techniques. Theory and experiment are compared for cylinders with a variety of surface coatings. Dynamic speckle from multiple rotating objects and objects with complicated underlying shape is also considered.
从理论和实验两方面对具有非平面基础形状的粗糙旋转物体的动态散斑进行了研究。理论处理基于将光场建模为物体表面离散散射体贡献的总和。由此可知，散斑相关函数的计算需要了解物体作为位置函数的平均散射强度以及物体的基础形状。散斑相关函数的计算简化为追踪一系列粗略采样物体的光线，并为每条光线计算由物体旋转引起的相对相移。与先前的分析技术相比，该方法相当简单。对具有各种表面涂层的圆柱体进行了理论与实验的比较。还考虑了多个旋转物体以及具有复杂基础形状的物体的动态散斑。
