title: Equivalence theorem for the spectral density of light waves on weak scattering.
abstract: The Equivalence theorem for the spectral density of light waves on weak scattering is discussed. It is shown that when a spatially coherent plane light wave is scattered from two entirely different media, the far-zone spectral density may have identical distribution provided the low-frequency antidiagonal spatial Fourier components of the correlation function of the media are the same. An example of light waves on scattering from a Gaussian Schell model medium is discussed, and the condition on which two different media may produce identical spectral densities is presented.
authors: Tao
authors: T
authors: Wang
authors: Xiaoling
authors: X
authors: Ji
authors: Daomu
authors: D
authors: Zhao
mesh_terms: D005583:Fourier Analysis; D008027:Light; D008962:Models, Theoretical; D055620:Optical Phenomena; D012542:Scattering, Radiation