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Prof. Prof. Dr. Saeed El-Sayed Abdel Ghany El-Sayed :: Publications: |
|
| Title: | A theoretical study on the
visibility of a speckle pattern
based on a Gabor hologram
and speckle photography |
| Authors: | M. M. EL-NICKLAWY, A. F. HASSAN, M. E. EL-ZAIKI, T. A. EL-DESSOUKI, S. E.-S. ABD EL-GHANY |
| Year: | 1996 |
| Keywords: | Not Available |
| Journal: | Not Available |
| Volume: | Not Available |
| Issue: | Not Available |
| Pages: | Not Available |
| Publisher: | Not Available |
| Local/International: | International |
| Paper Link: | Not Available |
| Full paper | Not Available |
| Supplementary materials | Not Available |
| Abstract: |
The visibility of the speckle pattern resulting from the scattered radiation of transmitted beams through a diffusing surface has been studied for a Gabor hologram and speckle photography. The cases of strictly- and quasimonochromatic light are also considered. Mathematical expressions for the dependence of the visibility on the distance from the centre of the undiffracted illuminating beam, its spectral half-width Afand the amplitude ratio m between the reference beam and the integrated scattered beams are obtained. A graphical method is found for determining M and Affrom the visibility as a function of the distance from the centre of the undiffracted illuminating beam. |
