Zhang Yucheng, Song Yuanjun, Chen Zongrong, Ji Jianhua, Shi Zhixiong
Department of Information Science and Technology, Xichang College, Xichang 615000, China.
Opt Lett. 2007 Feb 1;32(3):292-4. doi: 10.1364/ol.32.000292.
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.
基于光束的叠加，确定了一组产生双曲余弦 - 高斯波的虚拟源。推导了该双曲余弦 - 高斯波的闭式表达式，在适当的极限情况下，该表达式给出了双曲余弦 - 高斯光束的傍轴近似。根据此表达式，确定了相应傍轴双曲余弦 - 高斯光束的傍轴近似和所有阶的非傍轴修正。
