Gradient-Metasurface-Contact Photodetector for Visible-to-Near-Infrared Spin Light

Gradient-Metasurface-Contact Photodetector for Visible-to-Near-Infrared Spin Light

© 2025 Wiley‐VCH GmbH.

Détails bibliographiques
Publié dans:Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 17 vom: 29. Apr., Seite e2418405
Auteur principal: He, Chenglin (Auteur)
Autres auteurs: Tang, Zilan, Wang, Chunhua, Wang, Yufan, Hua, Qingzhao, Liu, Liang, Wang, Xiao, Schmidt, Oliver G, Maier, Stefan A, Ren, Haoran, Wang, Xiaoxia, Pan, Anlian
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Advanced materials (Deerfield Beach, Fla.)
Sujets:Journal Article circularly polarized light gradient metasurface contact photodetector plasmonics
Description
Résumé:© 2025 Wiley‐VCH GmbH.
Spin light detection is a rapidly advancing field with significant impact on diverse applications in biology, medicine, and photonics. Developing integrated circularly polarized light (CPL) detectors is pivotal for next-generation compact polarimeters. However, previous compact CPL detectors, based on natural materials or artificial resonant nanostructures, exhibit intrinsically weak CPL polarization sensitivity, are susceptible to other polarization states, and suffer from limited bandwidths. A gradient-metasurface-contact CPL photodetector is demonstrated operating at zero-bias with a high discrimination ratio (≈1.6 ✗ 104), broadband response (500-1100 nm), and immunity to non-CPL field components. The photodetector integrates InSe flakes with CPL-selective metasurface contacts, forming an asymmetric junction interface driven by CPL-dependent unidirectional propagating surface plasmon waves, generating zero-bias vectorial photocurrents. Furthermore, it is implemented the developed CPL photodetector in a multivalued logic system and demonstrated the optical decoding of CPL-encrypted communication signals. This metasurface contact engineering represents a new paradigm in light property detection, paving the way for future integrated optoelectronic systems for on-chip polarization detection
Description:Date Revised 29.04.2025
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202418405