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.
© 2002 Optical Society of America
(050.1380) Diffraction and gratings : Binary optics
(050.5080) Diffraction and gratings : Phase shift
(110.4850) Imaging systems : Optical transfer functions
(220.1230) Optical design and fabrication : Apodization
Haifeng Wang and Fuxi Gan, "Phase-Shifting Apodizers for Increasing Focal Depth," Appl. Opt. 41, 5263-5266 (2002)