Simulation method for non-Gaussian speckle in a partially coherent system

Dongyel Kang, Tom D. Milster

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Non-Gaussian speckle contrast from a phase-perturbed random object field in a spatially partially coherent system is simulated. A quasi-monochromatic extended incoherent source is modeled as a collection of independent point sources distributed on a regular grid. The source illuminates a phase screen object in a Kohler configuration. Speckle is calculated from the incoherent sum of irradiances in the image plane generated from the point sources. Simulated speckle contrasts are verified by an experiment with a fractallike rough surface distribution that is fabricated using a grayscale maskless lithography tool. Characteristics of the simulation method and physical quantities affecting speckle contrast are discussed.

Original languageEnglish (US)
Pages (from-to)1954-1960
Number of pages7
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume26
Issue number9
DOIs
StatePublished - Sep 1 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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