Dielectric Metalens Array for Simultaneous Polarization and Wavefront Mapping in the Visible Spectrum.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40560623.
- Also identified by DOI 10.1021/acs.nanolett.5c02300.
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Abstract
While traditional polarimetry effectively analyzes polarization states with bulky systems, recent advances have enabled metasurfaces to serve as compact alternatives. Metalens arrays have enabled full-polarization and phase profile determination. However, enhancing their efficiency and spatial resolution remains constrained in submetalens architectures. Here, we develop a shared-aperture TiO<sub>2</sub> metalens array that concurrently focuses six polarization components into a hexagonal lattice configuration. Through single-frame focal field analysis, the system enables comprehensive Stokes parameter reconstruction (4.64% deviation) and phase gradient quantification (1.75 rad/μm maximum). The architecture exhibits minimized cross-talk, permitting accurate characterization of complex vector beams─including radially/azimuthally polarized vortices and diverging wavefronts─with strong agreement to theoretical predictions. This integrated platform presents a promising avenue for applications requiring simultaneous polarization-state analysis, adaptive wavefront control, and quantum optical characterization in space-constrained environments.