Abstract
Abstract Point spread function defines the imaging property of a linear optical imaging system. Here Fermat spiral is introduced into Greek-ladder sieves to generate multiple different point spread functions along light propagation and further to realize multiplanar anisotropic imaging. Theoretical analysis and experimental results show that this kind of diffractive lenses has trifocal spots on the optical axis. The first and third foci are asymmetrical, meaning that they can provide different spatial resolution in different directions. The second focus is a vertex focal spot, which can be used for phase-contrast imaging. Due to amplitude-only diffractive lenses, they will have great potential in X-ray holography, X-ray microscopy, phase-contrast bio-imaging and optical trapping for the next generation of synchrotron radiation and free electron laser in the future. © 2018 Elsevier Ltd. All rights reserved.
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 callDisclaimer: 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.
