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Magneto-optical Studies of Noble Metal-Magnetic Dielectric Systems

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Abstract

The extraordinary optical transmission and Faraday effects of the bilayer heterostructure consisting of a metallic film perforated with subwavelength hole arrays and a uniform dielectric film magnetized perpendicular to its plane were systematically studied by three-dimensional finite-difference time-domain method. Results of the calculation found that for the magneto-plasmonic crystals under polarized incident light with transverse magnetic mode, the resonant transmittance reached 36.9%, the Faraday rotation acquired 1.216°, and the ellipticity got a positive value of 0.840. The value of Faraday rotation and ellipticity is respectively 15.2 and 93.3 times enhancement of the 0.08° and −0.009 of the bare BIG film at the wavelength. In the transverse electric mode, the Faraday effects of the systems also had a large enhancement in contrast to the bare magnetic film. The magneto-optical effects of the systems could be manipulated by polarization mode of incident light, geometry of perforated subwavelength hole arrays, and thickness of metallic and magnetic films. Evolution of the magneto-optical properties on the structural parameters was also analyzed. Possible mechanisms underlying the extraordinary phenomena were profoundly discussed. All these results indicated that the systems could find potential applications in magneto-optical devices such as data storages, sensors, and telecommunications.

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Acknowledgments

This work was supported by the National Key Research and Development Program of China (2016YFB0400801), 863 program (2014AA032608); National Natural Science Foundation of China (U1405253, 61227009, 61205051, 90921002); Natural Science Foundation of Fujian Province of China (2016J01265, 2013J05097); Fundamental Research Funds for the Central Universities (20720160015, 20720150032); Fundamental Research Funds for Xiamen University (2016Y0589, 2016Y0591); and Open Project Program of Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University (WYKF2016-1).

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Authors and Affiliations

  1. Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen, 361005, China

    Binbin Yu, Huiyu Chen, Qianwen Liu, Dingguo Li, Shengli Huang, Jiayuan Wang, Kai Huang, Chenyu Wang, Degang Wang, Shuping Li & Junyong Kang

  2. State Key Lab of Silicon Materials, Zhejiang University, Hangzhou, 310027, China

    Binbin Yu, Dingguo Li & Shengli Huang

  3. Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China

    Binbin Yu, Dingguo Li & Shengli Huang

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  1. Binbin Yu
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  2. Huiyu Chen
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  3. Qianwen Liu
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  4. Dingguo Li
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  5. Shengli Huang
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  6. Jiayuan Wang
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  7. Kai Huang
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  8. Chenyu Wang
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  9. Degang Wang
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  10. Shuping Li
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  11. Junyong Kang
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Correspondence to Shengli Huang.

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Yu, B., Chen, H., Liu, Q. et al. Magneto-optical Studies of Noble Metal-Magnetic Dielectric Systems. Plasmonics 13, 31–38 (2018). https://doi.org/10.1007/s11468-016-0480-2

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  • DOI: https://doi.org/10.1007/s11468-016-0480-2

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