Fig. 6
From: Planar efficient metasurface for generation of Bessel beam and super-resolution focusing
Simulation of plane-axicons with NA = 0.7 and incident wavelength λ = 532 nm. a − d Intensity profile of the J0, J1, J2 and J3 Bessel beams along the propagation direction, respectively. e − h Intensity curves of the J0, J1, J2 and J3 Bessel beams its corresponding horizontal cut of (a − d)