Fig. 7
From: Planar efficient metasurface for generation of Bessel beam and super-resolution focusing
The FWHMs of (a) J0 and (b) J1 Bessel beam as a function of wavelength with different NA
Fig. 7 | Optical and Quantum Electronics
From: Planar efficient metasurface for generation of Bessel beam and super-resolution focusing
The FWHMs of (a) J0 and (b) J1 Bessel beam as a function of wavelength with different NA