论文标题
光学涡流梁的非裂纹3D极化特征
Non-Diffractive 3D Polarisation Features of Optical Vortex Beams
论文作者
论文摘要
由于自旋和轨道角动量之间的相互作用，载体光学涡旋表现出复杂的极化模式。在这里，我们在分析和模拟上证明，光涡流梁的某些极化特征保持恒定的横向空间尺寸，而不是由于衍射而独立于梁散射。这些极化特征出现在相奇异性附近，与纵向电场的存在有关。预测的效果可能在计量学和高分辨率成像应用中很重要。
Vector optical vortices exhibit complex polarisation patterns due to the interplay between spin and orbital angular momenta. Here we demonstrate, both analytically and with simulations, that certain polarisation features of optical vortex beams maintain constant transverse spatial dimensions independently of beam divergence due to diffraction. These polarisation features appear in the vicinity of the phase singularity and are associated with the presence of longitudinal electric fields. The predicted effect may prove important in metrology and high resolution imaging applications.
