Modulation mechanism of multi-azimuthal masks on the redistributions of focused azimuthally polarized beams.

We propose a theoretical model to semi-quantitatively describe the modulation mechanism of multi-azimuthal masks on the focal fields of azimuthally polarized (AP) beam. With this model, we cannot only explain the redistributions of the polarization and intensity at the focal plane, but also consciously manage the focal fields by designing the mask structure… CONTINUE READING