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Journal of Modern Optics Volume 38, 1991 - Issue 9
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Original Articles

Fresnel Diffraction of Gaussian Beams by a Circular Aperture in Gradient-index Media

E. Acosta Laboratorio de Optica, Departamento de Fisica Aplicada, Facultad de Fisica, Universidad de Santiago de Compostela, E-15706, Santiago de Compostela, Galicia, Spain
&
C. Gomez-Reino Laboratorio de Optica, Departamento de Fisica Aplicada, Facultad de Fisica, Universidad de Santiago de Compostela, E-15706, Santiago de Compostela, Galicia, Spain
Pages 1659-1672 | Received 26 Oct 1990, Published online: 01 Mar 2007
 
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Abstract

This work presents a method of evaluating the intensity distribution of a Gaussian beam in a weakly inhomogeneous medium when it has been truncated by a circular aperture. An analytical expression for the diffracted field is obtained in terms of Bessel functions.

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