Paper
Study of Graded Index and Truncated Apertures Using Speckle Images
- Authors:
- Abdallah Hamed
- Abstract
- In this paper, apertures in the form of graded index distribution and truncated apertures are investigated. The 1st type of graded index aperture has central black zone followed by steps with increased intensity directed outwards. The second aperture has successive black and transparent annuls with central opaque zone. The third has four different truncated apertures. Digital diffuser is fabricated to get modulated speckle images for all described apertures. The profile of the speckle images and the corresponding autocorrelation profiles are plotted and the speckle sizes are computed for the different cited apertures. A Mat-lab code is written to compute and plot all of the above images.
- Keywords
- Graded Index Apertures; Speckle Images; Numerical Image Processing
- StartPage
- 144
- EndPage
- 152
- Doi