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9 March 2024 Magneto-optical functionalized surfaces for sensing applications
Laure Bsawmaii, Pascal Giraud, Gerges El Haber, Damien Jamon, François Royer, Yves Jourlain
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Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC1289518 (2024) https://doi.org/10.1117/12.3010763
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
Magneto-plasmonic resonant structures, which combine magnetic and metallic materials, are well known for improving biosensing and magnetic field detection. However, these structures suffer from low optical quality resonances (reflection dip) caused by the high absorption of plasmonic oscillations, which limits their practical applications. This paper proposes low-loss optical planar structures that may hold great promise for sensing applications. The first ones are unconventional magneto-plasmonic devices optimized for a so-called configuration “optical switch” [1]. The structure consists of a 1D deep sinusoidal gold grating covered by a thin cobalt layer. The second ones are all-dielectric devices made of a magneto-optical nanocomposite layer with a 1D photoresist grating on top [2]. Such magneto-optical devices are easy to implement and cost-effective, providing a very promising approach for magnetic field sensors, or biosensing in a both directions magnetized biased configuration. [1] A. V. Tishchenko and O. Parriaux, doi: 10.1109/JPHOT.2015.2445766. [2] Laure Bsawmaii et al. doi : https://doi.org/10.1364/OME.447030
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Laure Bsawmaii, Pascal Giraud, Gerges El Haber, Damien Jamon, François Royer, and Yves Jourlain "Magneto-optical functionalized surfaces for sensing applications", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC1289518 (9 March 2024); https://doi.org/10.1117/12.3010763
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KEYWORDS
Magneto-optics
Magnetism
Optical switching
Reflection
Biosensing
Cobalt
Optical gratings
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