Phase Characterization of Singular Metasurfaces.

ABSTRACT: The controlled generation and accurate characterization of light beams carrying orbital angular momentum (OAM) are essential for emerging applications in optical communication, quantum information, and advanced imaging. Metasurfaces offer a versatile platform for tailoring such structured electromagnetic fields. However, the accurate measurement of wavefronts containing multiple phase singularities remains a significant metrological challenge. In this work, we employ quadriwave lateral shearing interferometry (QLSI) as a quantitative phase imaging technique to retrieve spatially resolved phase maps of OAM beams generated by metasurfaces. We demonstrate that QLSI enables robust reconstruction of perfect and imperfect singular phase profiles, providing a reliable tool for the characterizatio

SUBMITTER: Tahmi Y 

PROVIDER: S-EPMC12637857 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature