矢量非傍轴厄米余弦高斯光束  

Vectorial nonparaxial Hermite-cosine-Gaussian beams

作　　者：唐斌[1] 蒋美萍[1] 江兴方[1] 金铱[1] 

机构地区：[1]江苏工业学院数理学院,常州江苏213164

出　　处：《量子电子学报》2008年第5期528-533,共6页Chinese Journal of Quantum Electronics

摘　　要：引入了矢量非傍轴厄米余弦高斯(HCosG)光束的概念,从矢量瑞利-索末菲衍射积分公式出发,得出了矢量非傍轴HCosG光束在自由空间的解析传输公式,并将非傍轴HCosG光束在自由空间衍射时轴上、近场、远场以及在傍轴条件下的传输作为特例给出。数值计算和分析表明,对于矢量非傍轴HCosG光束,参数和偏心参数均对光束的非傍轴特性有重要影响。此外,其轴上光强分布与光束的阶数及其奇偶性有关。The concept of vectorial nonparaxial Hermite-cosine-Gaussian （HCosG） beams is introduced and their free space propagation equations are derived analytically by using the vectorial Rayleigh-Sommerfeld diffraction integrals and the on-axis and far-fleld expressions as well as paraxial propagation formula are obtained in free space. Numerical calculations and analysis show that, the f-parameter and decentered parameter play important roles in determining the nonparaxiality of vectorial HCosG beams. In addition, the on-axis intensity distribution is relative to the beam order and its parity.

关 键 词：物理光学 矢量非傍轴厄米余弦高斯光束 瑞利-索末菲衍射积分  参数 偏心参数 

分 类 号：O435[机械工程—光学工程]