Photonic Spin-Multiplexing Metasurface for Switchable Spiral Phase Contrast Imaging.

ABSTRACT: As the two most representative operation modes in an optical imaging system, bright-field imaging and phase contrast imaging can extract different morphological information on an object. Developing a miniature and low-cost system capable of switching between these two imaging modes is thus very attractive for a number of applications, such as biomedical imaging. Here, we propose and demonstrate that a Fourier transform setup incorporating an all-dielectric metasurface can perform a two-dimensional spatial differentiation operation and thus achieve isotropic edge detection. In addition, the metasurface can provide two spin-dependent, uncorrelated phase profiles across the entire visible spectrum. Therefore, based on the spin-state of incident light, the system can be used for either diffrac

SUBMITTER: Huo P 

PROVIDER: S-EPMC7547647 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature