Experimental demonstration of anomalous nonreciprocal optical response of  1D periodic magnetoplasmonic nanostructures

L. Halagačka; M. Vanwolleghem; F. Vaurette; J. Ben-Youssef; P. Gogol; N. Yam; K. Postava; B. Dagens; J. Pištora

doi:10.1117/12.2039450

8 March 2014 Experimental demonstration of anomalous nonreciprocal optical response of 1D periodic magnetoplasmonic nanostructures

L. Halagačka, M. Vanwolleghem, F. Vaurette, J. Ben-Youssef, P. Gogol, N. Yam, K. Postava, B. Dagens, J. Pištora

Author Affiliations +

Proceedings Volume 8988, Integrated Optics: Devices, Materials, and Technologies XVIII; 89880E (2014) https://doi.org/10.1117/12.2039450
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

In this paper we analyze the optical and transversal magnetooptical (MO) response of magnetoplasmonic (MP) nanostructures. The MP structure is a 1D periodic gold grating fabricated by lift-off technique on the MO dielectric substrate (Bi-substituted yttrium iron garnet Bi_xY_3−xFe₅O₁₂). Following our recent theoretical work (Opt. Express 21, pp. 2174121755, Sep 2013.), we confirm here experimentally the predicted dependence of the MO response on the geometry of the grating, that is directly attributed to the anticrossing behavior of the Fabry-Perot (FP) resonance in the grating’s slits and the surface plasmon resonances (SPPs) at its interfaces. The experimental results were achieved by Mueller matrix spectroscopic ellipsometry. Observed fine tuning of the transverse magneto-optic Kerr opens up new possibilities for the design of compact nonreciprocal devices.

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L. Halagačka, M. Vanwolleghem, F. Vaurette, J. Ben-Youssef, P. Gogol, N. Yam, K. Postava, B. Dagens, and J. Pištora "Experimental demonstration of anomalous nonreciprocal optical response of 1D periodic magnetoplasmonic nanostructures", Proc. SPIE 8988, Integrated Optics: Devices, Materials, and Technologies XVIII, 89880E (8 March 2014); https://doi.org/10.1117/12.2039450

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