This article is cited in 12 papers

Laser beams

Use of the fractional Fourier transform in π/2 converters of laser modes

A. A. Malyutin

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: The possibility of using the fractional Fourier transform (FrFT) in optical schemes for astigmatic π/2 converters of Hermite–Gaussian modes to donut Laguerre–Gaussian modes is considered. Several schemes of converters based on the FrFT of the half-integer and irrational orders are presented. The lowest FrFT order than can be used in astigmatic mode converters is found. The properties of converters based on the fractional and ordinary Fourier transforms are compared.

PACS: 42.60.Jf

Received: 21.04.2003

 English version: Quantum Electronics, 2004, 34:2, 165–171

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