title: Speckle in the 4F optical system.
abstract: We provide a comprehensive analysis of the space and wavelength dependence of speckle generated by a thin diffuser and imaged by a 4F optical system. The use of this space-invariant system is shown to lead to the well-known features of speckle patterns in an analytically simple and elegant manner, thereby providing a clear insight into speckle in an optical configuration that includes the Fresnel zone, the optical Fourier transform plane, and the image plane. In our analysis we assume a white-noise diffuser. The spatial variation mainly depends on the imaging system, whereas the wavelength dependence is related to diffuser heights. Motion dynamics of speckle are also included.
authors.affiliation: The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. nachang@optics.rochester.edu
authors.forename: Nien-An
authors.initials: NA
authors.lastname: Chang
authors.forename: Nicholas
authors.initials: N
authors.lastname: George