Abstract

An analytical method known for phase filters is applied to amplitude filters. The method is based on the use of a series of figures of merit, such as the axial and the transverse gains and the Strehl ratio, which characterize the point-spread-function distribution near the focal region. As a practical implementation, we have applied this method to analytically design the superresolving three-zone amplitude filters and obtained a complete reshaping of the spatial intensity distribution. Regions of the radii of the filters with the transverse, axial or three-dimensional superresolutions are shown analytically. The maximum possible transverse or axial gain is derived for the certain Strehl ratio.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.