QC 351 A7 no. 32 / A random perturbation in the wavefront transmitted through an optical
system results in diffraction effects in the image which are describable in
terms of the statistical measures of the wavefront perturbations, whereas
the geometrical effects are determined only by the statistics of the gradient of the wavefront perturbation. By using a model in which the gradient
statistics are held constant while the depth of perturbations is varied,
differences between the geometrical and diffraction images are made apparent. For an rms depth Qw /A > 0.5, the diffraction and geometric images are
statistically indistinguishable, but for smaller depths the diffraction image departs from the geometric image, separating in effect into an undisturbed core and a diffracted halo, between which the partition of the image
power depends on the depth of the wavefront perturbations. Various proper-
ties of the diffraction image as a function of the rms depth of the perturbations are discussed.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/621627 |
| Date | 16 September 1968 |
| Creators | Shack, R. V. |
| Publisher | Optical Sciences Center, University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | Technical Report |
| Rights | Copyright © Arizona Board of Regents |
| Relation | Optical Sciences Technical Report 32 |
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