Improved side-lobe suppression in asymmetric apodization
- 14 March 1994
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 27 (3) , 459-463
- https://doi.org/10.1088/0022-3727/27/3/005
Abstract
Asymmetric apodization is achieved by adding edge strips or rings to the diffraction slit or circular aperture. It is shown to be equivalent to the superposition of a diffraction field of the main entrance aperture and an interference field of the two edge strips or rings. For further improvement, apodization efficiency is defined as the ratio of integrals of the irradiance square after and before apodization. New designs are proposed to improve side-lobe suppression. The results after adjusting suitable parameters show that the apodization efficiencies are enhanced.Keywords
This publication has 6 references indexed in Scilit:
- Asymmetric apodizationMeasurement Science and Technology, 1991
- Axial behavior of pupil-plane filtersJournal of the Optical Society of America A, 1988
- Spatial filter for increasing the depth of focusOptics Letters, 1985
- Diffraction by Semitransparent and Phase AnnuliJournal of the Optical Society of America, 1965
- Solution of the Luneberg Apodization Problems*Journal of the Optical Society of America, 1962
- MAXIMUM OF THE FACTOR OF ENCIRCLED ENERGYCanadian Journal of Physics, 1961