高斯光束照明单透镜系统的动态散斑

Dynamic speckle of gaussian-beam illumination with a single-lens geometry

对随机位相屏产生的动态散斑可以根据照明方式及光路设计方法进行分类研究。根据T.Yoshimura的文章所提出的理论公式,我们对高斯光束照明的单透镜成像系统的动态散斑进行了实验测量。实验证明理论公式正确,实验结果与理论予期值符合也说明我们所使用的实验方法可行。在实验过程中,我们提出一种新的拟合方法,从而解决了实验常数的确定问题。

A moving ground glass plate is illuminated by a He-ne laser in a single-lens system and the statistical properties of dynamic speckle are investigated by time correlation function. The experimental result agrees well with the expectation of the theory. A simple data processing method is pest forward and the advantage of this optical configuration is presented