Opt Lett. 2019 Jan 15;44(2):215-218. doi: 10.1364/OL.44.000215.
Three-dimensional polarization states of random light can be classified into regular and nonregular according to the structure of the related 3×3 polarization matrix. Here we show that any purely evanescent wave excited in total internal reflection of a partially polarized plane-wave field is always in a nonregular polarization state. The degree of nonregularity of such evanescent waves is also studied in terms of a recently advanced measure. Nonregular evanescent waves uncover new aspects of the polarimetric structure and dimensional character of electromagnetic near fields, with potential applications in nanoscale surface optics.
随机光的三维偏振态可根据相关的 3×3 偏振矩阵结构分为规则和不规则两类。在这里，我们表明，在部分偏振平面波场全内反射中激发的任何纯消逝波总是处于非规则偏振状态。还使用最近提出的一种度量方法研究了此类消逝波的非规则程度。非规则消逝波揭示了电磁近场的偏振结构和维度特征的新方面，在纳米尺度表面光学中有潜在的应用。
