Measuring of Transverse Energy Flows in a Focus of an Aluminum Lens

In this study, we theoretically and experimentally investigate the propagation of a second-order cylindrical vector beam through an aluminum lens which forms tight focus at distance wavelength. Simulation by finite-difference time-domain method Richards–Wolf formulae produces light field distributions coincide with experimental measurements provided scanning near-field optical microscopy. We demonstrate that pyramidal metallized cantilever hole is more sensitive to transversal component intensity than full or Umov–Poynting in areas reverse energy flow.