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

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 fie...

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Published inarXiv.org
Main Authors Spitzer, F, Poddubny, A N, Akimov, I A, Sapega, V F, Klompmaker, L, Kreilkamp, L E, Litvin, L V, Jede, R, Karczewski, G, Wiater, M, Wojtowicz, T, Yakovlev, D R, Bayer, M
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 15.12.2017
Subjects
Excitons
Fluxes
Kerr effects
Light emission
Light sources
Luminous intensity
Magnetic fields
Magnetism
Quantum wells
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Summary: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.
ISSN:2331-8422