Performance parameters for focusing, widely used to investigate the properties of pupil filters, are extended to the scalar nonparaxial regime. These measures can be used to investigate focusing properties of different types of focusing systems, including those with apodizers and superresolving masks.
© 2007 Optical Society of America
Original Manuscript: March 5, 2007
Revised Manuscript: April 3, 2007
Manuscript Accepted: April 4, 2007
Published: June 5, 2007
Colin J. R. Sheppard, "Filter performance parameters for high-aperture focusing," Opt. Lett. 32, 1653-1655 (2007)