Based on the generalized Huygens-Fresnel diffraction integral and the expansion of the hard aperture function into a finite sum of complex Gaussian functions, the approximate analytical expression of elegant Laguerre-Gaussian beams passing through a paraxial ABCD optical system with an annular apert
Paraxial propagation of Mathieu beams through an apertured ABCD optical system
✍ Scribed by A. Chafiq; Z. Hricha; A. Belafhal
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 404 KB
- Volume
- 253
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
Based on the relationship between separable solutions of the Helmholtz equation, we expanded the fieldÕs amplitude associated with Mathieu beams in terms of Bessel beams. By using the expansion of the circ function into a finite sum of complex Gaussian functions, we derived an approximated analytical expression of the amplitude distribution of Mathieu beams at the output plane of any apertured paraxial ABCD optical system. Some numerical calculations are performed and it is shown that our approach can substitute the usual numerical integration of the Helmholtz equation or the numerical calculation of the diffraction integral.
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