Abstract
Metasurface-based optical computing has been a topic of interest for many researchers, aimed at implementing high-speed and efficient image processing in small equipment. However, the existing designs cannot work well in the aspects of spatial resolution, polarization and azimuth angle simultaneously. Here, we present a 2D differential metasurface with a honeycomb photonic structure as the basic unit, which not only satisfies isotropy and polarization independence, but also has a NA as high as 0.44. Through numerical verification, the proposed metasurface can produce the result of second-order differential operation of Gaussian functions in 1D space, and can be used to implement edge detection of objects in an image as well. Our results provide new opportunities for optical analog computing and computer vision applications.
Sign-in/Register to access full text options 
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 callMore From: Photonics and Nanostructures - Fundamentals and Applications
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.
