单轴晶体
光学
高斯光束
光轴
梁(结构)
平方米
物理
旋涡
高斯分布
Crystal(编程语言)
晶体光学
光束
涡流
光束直径
材料科学
激光器
激光束
机械
量子力学
程序设计语言
计算机科学
镜头(地质)
作者
Xun Wang,Zhirong Liu,Daomu Zhao
标识
DOI:10.1364/josaa.31.002268
摘要
Analytical expressions for the three components of nonparaxial propagation of a polarized elliptical Gaussian vortex beam in uniaxial crystal orthogonal to the optical axis are derived. Intensity and phase distributions of the three components of a polarized elliptical Gaussian vortex beam propagating in a uniaxial crystal orthogonal to the optical axis are illustrated by numerical examples. The influences of the initial beam’s parameters and the parameters of the uniaxial crystal on the evolution of the beam’s intensity and phase distributions in the uniaxial crystal are examined in detail. Results show that the statistical properties of an elliptical Gaussian vortex beam nonparaxially propagating in uniaxial crystal orthogonal to the optical axis are closely determined by the initial beam’s parameters and the parameters of the crystal. The beam waist width ω0 not only affects the size of the beam profile in uniaxial crystal but also determines the nonparaxial effect of an elliptical Gaussian vortex beam. The profile of an elliptical Gaussian vortex beam in the uniaxial crystal becomes twisted and tilted, whether the elliptical factor α is greater or smaller than unity. The beam profile is tilted to the left in positive crystal. In contrast, it is inclined to the right in negative crystal. The results indicate that uniaxial crystal provides a convenient method to modulate the intensity and phase distributions of an elliptical Gaussian vortex beam, which is beneficial to optical manipulation of microscopic particles and nonlinear optics involving a specific beam profile and phase.
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