Simulation and study of Fresnel diffraction for arbitrary two-dimensional apertures
- Department of Physics, University of California, Los Angeles, California 90024 (United States)
A stable, efficient algorithm to calculate numerically a Fresnel diffraction image, given any two-dimensional aperture or obstacle, is introduced. The algorithm predicts both the intensity and relative phase of the image. An alternate faster algorithm is presented for a limited class of apertures. Also examined are images formed from a variety of aperture shapes. Using this computational technique, plots on the complex plane are shown to give insight into Fresnel diffraction. With additional modifications to accept parameters from an experimental apparatus, the algorithms model Fresnel diffraction for laboratory situations. In addition, the algorithms are suitable for numerical implementation on personal computers. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 388165
- Journal Information:
- Computers in Physics, Vol. 10, Issue 6; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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