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 language | English (US) |
|---|---|
| Pages (from-to) | 1954-1960 |
| Number of pages | 7 |
| Journal | Journal of the Optical Society of America A: Optics and Image Science, and Vision |
| Volume | 26 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 1 2009 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Computer Vision and Pattern Recognition