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Open AccessArticle

Tunable Optical Nanocavity of Iron-garnet with a Buried Metal Layer

1
Lomonosov Moscow State University, Moscow 119991, Russia
2
Russian Quantum Center, Skolkovo, Moscow Region 143025, Russia
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Experimentelle Physik 2, Technische Universitat Dortmund, D-44221 Dortmund, Germany
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Electron Science Research Institute, Edith Cowan University, Joondalup, WA 6027, Australia
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Image Processing Systems Institute, Russian Academy of Sciences, 443001 Samara, Russia
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Samara State Aerospace University, 443086 Samara, Russia
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Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 Saint Petersburg, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Gururaj V. Naik
Materials 2015, 8(6), 3012-3023; https://doi.org/10.3390/ma8063012
Received: 2 April 2015 / Revised: 12 May 2015 / Accepted: 20 May 2015 / Published: 28 May 2015
(This article belongs to the Special Issue Plasmonic Materials)
We report on the fabrication and characterization of a novel magnetophotonic structure designed as iron garnet based magneto-optical nanoresonator cavity constrained by two noble metal mirrors. Since the iron garnet layer requires annealing at high temperatures, the fabrication process can be rather challenging. Special approaches for the protection of metal layers against oxidation and morphological changes along with a special plasma-assisted polishing of the iron garnet layer surface were used to achieve a 10-fold enhancement of the Faraday rotation angle (up to 10.8\(^{\circ}/\mu\)m) within a special resonance peak of 12 nm (FWHM) linewidth at a wavelength of 772 nm, in the case of a resonator with two silver mirrors. These structures are promising for tunable nanophotonics applications, in particular, they can be used as magneto-optical (MO) metal-insulator-metal waveguides and modulators. View Full-Text
Keywords: planar waveguides; surface plasmon-polariton; Faraday effect; gyrotropic media; optical nanocavity; metal nanocavity planar waveguides; surface plasmon-polariton; Faraday effect; gyrotropic media; optical nanocavity; metal nanocavity
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Kuz'michev, A.N.; Kreilkamp, L.E.; Nur-E-Alam, M.; Bezus, E.; Vasiliev, M.; Akimov, I.A.; Alameh, K.; Bayer, M.; Belotelov, V.I. Tunable Optical Nanocavity of Iron-garnet with a Buried Metal Layer. Materials 2015, 8, 3012-3023.

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