Circular dichroism induction in WS2 by a chiral plasmonic metasurface

Lorén, Fernando ; Genet, Cyriaque ; Martín-Moreno, Luís

Resumen: We investigate the interaction between a monolayer of WS2 and a chiral plasmonic metasurface. WS2 possesses valley excitons that selectively couple with one-handed circularly polarized light. At the same time, the chiral plasmonic metasurface exhibits spin-momentum locking, leading to a robust polarization response in the far field. Using a scattering formalism based on the coupled mode method, we analyze various optical properties of the WS2 monolayer. Specifically, we demonstrate the generation of circular dichroism in the transition metal dichalcogenide (TMD) by harnessing the excitation of surface plasmon polaritons (SPPs) in the metasurface. Moreover, we observe the emergence of other guided modes, opening up exciting possibilities for further exploration in TMD-based devices.

Idioma: Inglés

DOI: 10.1364/OME.497120

Año: 2023

Publicado en: OPTICAL MATERIALS EXPRESS 13, 11 (2023), 3366 [10 pp.]
ISSN: 2159-3930

Factor impacto JCR: 2.8 (2023)

Categ. JCR: OPTICS rank: 43 / 119 = 0.361 (2023) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 230 / 439 = 0.524 (2023) - Q3 - T2

Factor impacto CITESCORE: 5.5 - Electronic, Optical and Magnetic Materials (Q2)

Factor impacto SCIMAGO: 0.662 - Electronic, Optical and Magnetic Materials (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2020-115221GB-C41

Tipo y forma: Artículo (Versión definitiva)