Influence of filling factor on reflectivity and transversal Kerr effect of permalloy-based two-dimensional magnetoplasmonic crystals

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Abstract

We studied the coefficient of reflection and transversal Kerr effect for a series of two-dimensional magnetoplasmonic crystals based on silver, permalloy Ni80Fe20 and silicon nitride Si3N4. It is shown that the filling factor of the samples has a nonlinear effect on their optical and magneto-optical properties. The maximum value of the Kerr effect is 0.88% with a filling factor of 0.77.

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About the authors

D. V. Murzin

Immanuel Kant Baltic Federal University

Author for correspondence.
Email: dvmurzin@yandex.ru
Russian Federation, Kaliningrad, 236041

V. K. Belyaev

Immanuel Kant Baltic Federal University

Email: dvmurzin@yandex.ru
Russian Federation, Kaliningrad, 236041

Ch. Gritsenko

Immanuel Kant Baltic Federal University

Email: dvmurzin@yandex.ru
Russian Federation, Kaliningrad, 236041

V. V. Rodionova

Immanuel Kant Baltic Federal University

Email: dvmurzin@yandex.ru
Russian Federation, Kaliningrad, 236041

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Supplementary files

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2. Fig. 1. Schematic representation of the setup used to obtain the spectral dependences of R and δ. HAC – modulating magnetic field.

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3. Fig. 2. Images of the surface of magnetoplasmonic crystals with different filling factors K (a). The table shows the values ​​of K and the corresponding electron beam doses. Panel (b) shows the experimental dependence of K on the electron beam dose (black dots), as well as the approximation of the obtained data by an exponential function (red solid line).

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4. Fig. 3. Spectral dependences of R (black lines with square dots) and δ (red lines with round dots) measured for magnetoplasmonic crystal samples with different K and for the control sample (a–j). Calculated spectral position of the Rayleigh–Wood anomalies in the wavelength–incidence angle coordinates for p-polarized light and zero azimuthal angle (λ). Black solid lines correspond to the case of excitation of collinear plasmon modes, and the red dotted line corresponds to the case of excitation of noncollinear plasmon modes. The values ​​in brackets (mx, my) correspond to the diffraction orders along the perpendicular directions of the lattice. Dependence of R (black line with square dots) and Δδ (red line with round dots) near the resonance wavelength λ ≈ 605 nm on the value of K (m).

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