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- Title
Criterio Generalizado para la Distinción entre Difracción de Fraunhofer y Fresnel.
- Authors
Rueda, E. A.; Medina, F. F.; Barrera, J. F.
- Abstract
The type of diffraction that is generated when an aperture is illuminated with a spherical monocromatic wave depends on the optical setup parameters: wavelenght, source-aperture and aperture-screen distances, and aperture geometry. There are criteria to distinguish between Fraunhofer and Fresnel diffraction in apertures that can be circumscribed or not, which are based on the number of Fresnel zones observed through the aperture. In the expression used to determine the number of Fresnel zones, for both types of apertures, there is a term with the same dependence on the wavelenght, source-aperture distance and aperture-screen distance. This fact allows the definition of a generalized criterion for the differentiation between Fraunhofer and Fresnel diffraction.
- Subjects
OPTICAL diffraction; FRAUNHOFER lines; WAVE-length of light; GEOMETRY; PHYSICS
- Publication
Revista Colombiana de Física, 2009, Vol 41, Issue 1, p128
- ISSN
0120-2650
- Publication type
Article