Knowing the vectorial electric field distribution near the focus of a high-NA objective lens is of great importance for applications e.g. microscopy, optical tweezer, laser machining, etc. The high-NA objective lens is often assumed as aplanatic lens. We demonstrate the focusing of variously polarized beams, e.g. linearly, circularly and radially polarized beams, by an aplanatic lens in VirtualLab Fusion. We investigate focal field with respect to different shapes of apertures, e.g. circular and annular.
