Journal
OPTICS LETTERS
Volume 32, Issue 3, Pages 292-294Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.000292
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On the basis of superposition of beams, a group of virtual sources that generate a cosh-Gaussian wave is identified. A closed-form expression is derived for this cosh-Gaussian wave, which, in the appropriate limit, yields the paraxial approximation for the cosh-Gaussian beam. From this expression, the paraxial approximation and the nonparaxial corrections of all orders for the corresponding paraxial cosh-Gaussian beam are determined. (c) 2007 Optical Society of America.
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