Transmission characteristics of linearly polarized light in reflection-type one-dimensional magnetophotonic crystals

Abstract

The propagation properties of linearly polarized light in reflection-type one-dimensional magnetophotonic crystals are studied by using the 4×4 transmission matrix method. The structure models of reflection-type one-dimensional magnetophotonic crystals are designed, the magnetic field direction control characteristics of reflection spectrum and Kerr rotation angle are discussed, and the effect of applied magnetic field direction and strength on reflection spectrum and Kerr rotation angle are analyzed. The results show that the non-diagonal elements in the dielectric constant of magneto optical materials change when the angle ϕ between applied magnetic field and optical path changes, the reflectivity and Kerr rotation angle decrease when the angle ϕ increases; when the applied magnetic field strength changes, the reflectivity and Kerr rotation angle increase when the applied magnetic field strength increases; by adjusting the angle ϕ and strength of the applied magnetic field, the rotation angle of Kerr can be adjusted to 45°, and a more flat reflection spectrum can be obtained by designing the appropriate structure.

Keywords

magnetophotonic crystal / 4×4 transfer matrix method / magneto-optical effect / Kerr rotation angle

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 61765003).

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2019 Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature