Fig. 1. Schematic of diffraction process of the nonparaxial convergent light wave limited by a circular aperture

Fig. 2. Ratios of complex amplitudes of focal plane light field U(r,0)/U0 versus relative radial coordinate r/λ

Fig. 3. Total power ratios of focal plane light field to diffraction source light field PO/PS versus maximum inclination angle θm

Fig. 4. Normalized amplitude distributions of vertical axis facet U(r,z)/U0 versus relative radial coordinate r/λ

Fig. 5. Normalized amplitudes of light field at point on axis U(r,z)/U0 versus relative axial coordinate z/z1

Fig. 6. Added phases of light field at point on axis ΦO(0,z) versus relative axial coordinate z/z1