RUI: Size, Index, and Morphology Determination of Aspherical Scatterers by Rainbow Refractometry

该项目研究了逆散射中的一个新问题，即根据被其散射的光的彩虹焦散的位置来确定透明物体的形状和折射率。这项工作将从实验上检验从非圆形截面的透明圆柱体散射的光的彩虹位置作为旋转角度的函数。初步结果表明，截面形状被编码为一次和二次彩虹角偏差的傅里叶级数展开系数。一个附带的模型被用来解释数据。

This project investigates a novel problem in inverse scattering, the determination of the shape and refractive index of a transparent object from the position of the rainbow caustics of light scattered by it. The work will examine experimentally the rainbow position of light scattered from a transparent cylinder with a non-circular cross section as a function of the angle of rotation. Preliminary results indicate that the cross sectional shape is encoded into the coefficients of the Fourier series expansion of the deviation of the primary and secondary rainbow angles. An accompanying model is used to explain the data.