High discrimination ratio, broadband circularly polarized light photodetector using dielectric achiral nanostructures.

ABSTRACT: The on-chip measurement of polarization states plays an increasingly crucial role in modern sensing and imaging applications. While high-performance monolithic linearly polarized photodetectors have been extensively studied, integrated circularly polarized light (CPL) photodetectors are still hindered by inadequate discrimination capability. This study presents a broadband CPL photodetector utilizing achiral all-dielectric nanostructures, achieving an impressive discrimination ratio of ~107 at a wavelength of 405 nm. Our device shows outstanding CPL discrimination capability across the visible band without requiring intensity calibration. It functions based on the CPL-dependent near-field modes within achiral structures: under left or right CPL illumination, distinct near-field modes are e

SUBMITTER: Zhang G 

PROVIDER: S-EPMC11427471 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature