论文标题
自由形式的深色空心梁的几何相波
Geometric-Phase Waveplates for Free-Form Dark Hollow beams
论文作者
论文摘要
我们证明了创建具有相位奇异性的光束的可能性，这些相位刻在外来强度景观中，模仿各种不同平面曲线的形状。为了实现这一目标，我们开发了一种方法，可以将某些选定曲线的几何特性直接编码为单个方位角相位因子，而无需基于冗长的数值程序通过间接加密方法。该结果用于塑造基于液体晶体的不均匀波板的视轴分布。后者最终用于通过Pancharatnam-Berry相雕刻输入光学高斯光束的波前。
We demonstrate the possibility to create optical beams with phase singularities engraved into exotic intensity landscapes imitating the shapes of a large variety of diverse plane curves. To achieve this aim, we have developed a method for directly encoding the geometric properties of some selected curve into a single azimuthal phase factor without passing through indirect encryption methods based on lengthy numerical procedures. The outcome is utilized to mould the optic axis distribution of a liquid-crystal-based inhomogeneous waveplate. The latter is finally used to sculpt the wavefront of an input optical gaussian beam via Pancharatnam-Berry phase.
