Fig. 5 | Optical and Quantum Electronics

Fig. 5

From: Planar efficient metasurface for generation of Bessel beam and super-resolution focusing

Fig. 5

a − d The intensity in the x − y plane and corresponding phase profiles of J0, J1, J2 and J3 Bessel beams at Z = 2 μm, Z = 3 μm, Z = 4 μm and Z = 5 μm planes along the propagation direction, respectively. e The intensity curves of J0, J1, J2 and J3 Bessel beams corresponding horizontal cut (a − d). f The FWHMs values for J0, J1, J2 and J3 Bessel beams along the propagation direction. The NA and incident wavelength are 0.7 and 532 nm, respectively

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