Virtual sources for a cosh-Gaussian beam |
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Authors: | Zhang Yucheng Song Yuanjun Chen Zongrong Ji Jianhua Shi Zhixiong |
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Institution: | Department of Information Science and Technology, Xichang College, Xichang 615000, China. zyc89514375@163.com |
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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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