High-Refractive-Index Materials for Giant Enhancement of the Transverse Magneto-Optical Kerr Effect

The ability of plasmonic structures to confine and enhance light at nanometer length scales has been traditionally exploited to boost the magneto-optical effects in magneto-plasmonic structures. These platforms allows for light control via externally applied magnetic fields, which is of prime import...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2020-02, Vol.20 (4), p.952
Main Authors: Moncada-Villa, Edwin, Mejía-Salazar, J Ricardo
Format: Article
Language:English
Subjects:
fabry–perot resonances
hri materials
magneto-optics
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Summary:The ability of plasmonic structures to confine and enhance light at nanometer length scales has been traditionally exploited to boost the magneto-optical effects in magneto-plasmonic structures. These platforms allows for light control via externally applied magnetic fields, which is of prime importance for sensing, data storage, optical-isolation, and telecommunications applications. However, applications are hindered by the high-level of ohmic losses associated to metallic and ferromagnetic components. Here, we use a lossless all-dielectric platform for giant enhancement of the magneto-optical effects. Our structure consists of a high-refractive index dielectric film on top of a magnetic dielectric substrate. We numerically demonstrate an extraordinarily enhanced transverse magneto-optical Kerr effect due to the Fabry-Perot resonances supported by the high-refractive index slab. Potential applications for sensing and biosensing are also illustrated in this work.
ISSN:1424-8220
1424-8220
DOI:10.3390/s20040952