Fig. 2: Accurate focusing model of a circular Airy beam via phase aperture constraints.
From: Highly-accurate manipulation of focal length for circular Airy beams
a Comprehensive schematic of the accurate focusing model with the inner and outer phase apertures. b Diffraction effect of the inner radius of the phase aperture on the focal length. c Diffraction effect of the outer radius of the phase aperture on the focal length. d Flowchart of the multi-parameter co-optimization process.
