Phase-shifting apodizers for increasing focal depth.
We propose the use of a phase-shifting apodizers to increase focal depth, and we study the axial and radial behavior of this kind of apodizer under the condition that the axial intensity distribution is optimized for high focal depth.
Wang
Haifeng
H
Shanghai Institute of Optics and Fine Mechanics, China. h.wang@tnw.tudelft.nl
Gan
Fuxi
F