Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Opt Lett. 2011 Jan 15;36(2):295-7. doi: 10.1364/OL.36.000295.
Based on the vector angular spectrum representation and the method of stationary phase, the analytical vectorial structure of the cylindrically polarized Laguerre-Gaussian beam diffracted at a circular aperture is derived in the far field, which provides an approach to further comprehend the vectorial properties of the apertured cylindrically polarized beams. The radially polarized, azimuthally polarized, and unapertured cases can be viewed as the special cases of our general result. The analyses show that the far-field energy flux distributions of the entire beam, the TE term, and the TM term depend on the beam order, the ratio of the waist width to the wavelength, the truncation parameter, and the angle between the electric field vector and the radial direction.
基于矢量角谱表示和相位驻定法，推导了远场中圆形孔径衍射的圆柱偏振拉盖尔-高斯光束的解析矢量结构，为进一步理解有孔圆柱偏振光束的矢量特性提供了一种方法。径向偏振、角向偏振和无孔情况可以看作是我们一般结果的特例。分析表明，整个光束、TE 项和 TM 项的远场能流分布取决于光束阶数、腰宽与波长比、截断参数以及电场矢量与径向夹角。
