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Routing the emission of a near-surface light source by a magnetic field

2017/12/15 by F. Spitzer, Spitzer, F., Alexander N. Poddubny +23
Engineering · Materials Science · #FOS: Physical sciences #Magneto-Optical Properties and Applications #Materials Science (cond-mat.mtrl-sci) #Optical Coatings and Gratings #Optics (physics.optics) #Plasmonic and Surface Plasmon Research

paper · pdf · doi:10.48550/arxiv.1712.05703

openalex publication_date 2017/12/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Magneto-optical phenomena such as the Faraday and Kerr effects play a decisive role for establishing control over polarization and intensity of optical fields propagating through a medium. Intensity effects where the direction of light emission depends on the orientation of the external magnetic field are of particular interest as they can be used for routing the light. We report on a new class of transverse emission phenomena for light sources located in the vicinity of a surface, where directionality is established perpendicularly to the externally applied magnetic field. We demonstrate the routing of emission for excitons in a diluted-magnetic-semiconductor quantum well. The directionality is significantly enhanced in hybrid plasmonic semiconductor structures due to the generation of plasmonic spin fluxes at the metal-semiconductor interface.

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