Carter W H, Ho P C
Appl Opt. 1974 Jan 1;13(1):162-72. doi: 10.1364/AO.13.000162.
An experiment is reported in which the one-dimensional scattering potential along a line through a semitransparent bar with nonuniform index of refraction is determined from holographic measurements of scattered monochromatic light waves. The experiment is performed using an inhomogeneous bar for the first time in order to test quantitatively a recently developed inverse scattering theory. This theory suggests a method by which the three-dimensional structure of a semitransparent, weakly scattering object can be determined by means of light scattering experiments. The structural data obtained in this experiment agree with known object parameters to within errors of the order of a few percent. In addition, a problem that occurred in earlier experiments concerning the presence of an unwanted background is analyzed. A method for removing the background is described, which is employed in the present experiment and is applicable for use with all objects that scatter light only into directions that make small angles with the direction of incidence.
本文报道了一项实验，通过对散射单色光波的全息测量来确定沿穿过具有非均匀折射率的半透明棒的直线上的一维散射势。首次使用非均匀棒进行该实验，以便定量测试最近发展的逆散射理论。该理论提出了一种方法，通过光散射实验可以确定半透明、弱散射物体的三维结构。在该实验中获得的结构数据与已知物体参数的误差在百分之几的量级内相符。此外，分析了早期实验中出现的与不需要的背景存在相关的问题。描述了一种去除背景的方法，该方法在本实验中使用，并且适用于所有仅将光散射到与入射方向成小角度方向的物体。
