L. E. Kreilkamp
A M Grishin
S I Khartsev
Mohammad Nur E Alam, Edith Cowan UniversityFollow
Mikhail Vasiliev, Edith Cowan UniversityFollow
Kamal Alameh, Edith Cowan UniversityFollow
A K Zvezdin
Macmillan Publishers Limited
Faculty of Health, Engineering and Science
Electron Science Research Institute
Magnetic field control of light is among the most intriguing methods for modulation of light intensity and polarization on sub-nanosecond timescales. The implementation in nanostructured hybrid materials provides a remarkable increase of magneto-optical effects. However, so far only the enhancement of already known effects has been demonstrated in such materials. Here we postulate a novel magneto-optical phenomenon that originates solely from suitably designed nanostructured metal-dielectric material, the so-called magneto-plasmonic crystal. In this material, an incident light excites coupled plasmonic oscillations and a waveguide mode. An in-plane magnetic field allows excitation of an orthogonally polarized waveguide mode that modifies optical spectrum of the magneto-plasmonic crystal and increases its transparency. The experimentally achieved light intensity modulation reaches 24%. As the effect can potentially exceed 100%, it may have great importance for applied nanophotonics. Further, the effect allows manipulating and exciting waveguide modes by a magnetic field and light of proper polarization.
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