Polarization singularities in paraxial vector fields: morphology and statistics
Polarization singularities in paraxial vector fields: morphology and statistics
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DOI：
10.1016/s0030-4018(02)02088-6
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发表时间：
2002-12-01
影响因子：
2.4
通讯作者：
Dennis, MR
中科院分区：
文献类型：
--
作者：
Dennis, MR
横向平面中的偏振图案通常包含奇点：圆偏振点（C 点）、线偏振线（L 线）、瞬时零点（向错）和分量零点。我们研究了这些奇点处椭圆场的几何形状，使用斯托克斯参数和其他参数来表征奇异几何形状和形态。与随机表面上的类似结构（即脐点和抛物线）进行比较。在随机偏振场中计算不同类型偏振奇点的密度和相关性，并与相位奇点和随机表面的统计数据进行比较。 (C) 2002 Elsevier Science B.V. 保留所有权利。
Polarization patterns in the transverse plane generically contain singularities: points of circular polarization (C points), lines of linear polarization (L lines), instantaneous zeros (disclinations) and component zeros. We investigate the geometry of ellipse fields at these singularities, using the Stokes parameters and others to characterize the singular geometry and morphology. Comparison is made with analogous structures on random surfaces, namely umbilic points and parabolic lines. The densities and correlations of the different types of polarization singularities are calculated in random polarization fields, and compared to the statistics of phase singularities and random surfaces. (C) 2002 Elsevier Science B.V. All rights reserved..