## Propagation of Laguerre–Gaussian and elegant Laguerre–Gaussian beams in apertured fractional Hankel transform systems

JOSA A, Vol. 21, Issue 12, pp. 2375-2381 (2004)

http://dx.doi.org/10.1364/JOSAA.21.002375

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### Abstract

On the basis of the fact that a hard-edged-aperture function can be expanded into a finite sum of complex Gaussian functions, approximate analytical expressions for the output field distribution of a Laguerre-Gaussian beam and an elegant Laguerre-Gaussian beam passing through apertured fractional Hankel transform systems are derived. Some numerical simulation comparisons are done, by using the approximate analytical formulas and diffraction integral formulas, and it is shown that our method can significantly improve the numerical calculation efficiency.

© 2004 Optical Society of America

**OCIS Codes**

(050.1220) Diffraction and gratings : Apertures

(050.1940) Diffraction and gratings : Diffraction

(070.2590) Fourier optics and signal processing : ABCD transforms

(140.3300) Lasers and laser optics : Laser beam shaping

**History**

Original Manuscript: April 1, 2004

Revised Manuscript: June 28, 2004

Manuscript Accepted: June 28, 2004

Published: December 1, 2004

**Citation**

Zhangrong Mei and Daomu Zhao, "Propagation of Laguerre–Gaussian and elegant Laguerre–Gaussian beams in apertured fractional Hankel transform systems," J. Opt. Soc. Am. A **21**, 2375-2381 (2004)

http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-12-2375

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