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Published January 15, 2008 | Published
Journal Article Open

Circular beams

Abstract

A very general beam solution of the paraxial wave equation in circular cylindrical coordinates is presented. We call such a field a circular beam (CiB). The complex amplitude of the CiB is described by either the Whittaker functions or the confluent hypergeometric functions and is characterized by three parameters that are complex in the most general situation. The propagation through complex ABCD optical systems and the conditions for square integrability are studied in detail. Special cases of the CiB are the standard, elegant, and generalized Laguerre-Gauss beams; Bessel-Gauss beams; hypergeometric beams; hypergeometric-Gaussian beams; fractional-order elegant Laguerre-Gauss beams; quadratic Bessel-Gauss beams; and optical vortex beams.

Additional Information

© 2008 Optical Society of America. Received November 8, 2007; revised December 4, 2007; accepted December 5, 2007; posted December 10, 2007 (Doc. ID 89560); published January 11, 2008. We acknowledge support from Consejo Nacional de Ciencia y Tecnología (grant 42808), the Tecnológico de Monterrey (grant CAT-007), and the Secretaría de Educación Pública de México.

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August 22, 2023
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