Figure 2
From: Planar binary-phase lens for super-oscillatory optical hollow needles
(a)–(f) The 2-dimentional color maps of the optical intensity distribution in the XY-plane and the optical intensity distribution curves along the x-axis obtained from Eq. (2) using the vectorial angular spectrum method at different propagation distances of 300λ, 302λ, 304λ, 306λ, 308λ, and 310λ, respectively, where the intensity is plotted in arbitrary unit.
