Virtual sources for a cosh-Gaussian beam
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Updated: Jul 17, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Yucheng Zhang1, Yuanjun Song, Zongrong Chen
1Department of Information Science and Technology, Xichang College, Xichang 615000, China. zyc89514375@163.com
Abstract:
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.
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