Broadband Enhancement of Faraday Effect Using Magnetoplasmonic Metasurfaces

被引:0
作者
Soheila Kharratian
Hakan Urey
Mehmet C. Onbaşlı
机构
[1] Koç University,Department of Materials Science and Engineering
[2] Koç University,Department of Electrical and Electronics Engineering
来源
Plasmonics | 2021年 / 16卷
关键词
Magnetooptics; Plasmonics; Faraday effect; Metasurfaces; Faraday effect;
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中图分类号
学科分类号
摘要
Magnetooptical Faraday effect enables ultrafast photonic devices based on nonreciprocal polarization rotation; however, the intrinsic weakness of Faraday effect prevents miniaturization and practical applications of nonreciprocal photonic devices. Magnetoplasmonics offers new mechanisms for enhancing magnetooptical effects using surface plasmon resonances, which generally have narrow bandwidths. Using finite-difference time-domain modeling, we demonstrate a magnetoplasmonic metasurface, which remarkably enhances the Faraday effect in a wide spectral range. While Faraday rotation in a bare bismuth-substituted yttrium iron garnet film is below 0.02° in the studied range of 600–1600 nm, the proposed metasurface yields few degrees of rotation in a broad band with a maximum exceeding 6.5°, which indicates about three orders of magnitude enhancement. We also show that by optimizing the configuration of the system including the geometry and excitation parameters, the metasurface response and operation band can be tuned further, and rotation values higher than 20° can be achieved. Finally, we present guidelines for designing magnetoplasmonic metasurfaces.
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页码:521 / 531
页数:10
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[1]  
Kimel AV(2007)Nonthermal optical control of magnetism and ultrafast laser-induced spin dynamics in solids J Phys: Condens Matter 19 043201-762
[2]  
Kirilyuk A(2008)Compact optical one-way waveguide isolators for photonic-band-gap microchips Phys Rev A 78 023804-478
[3]  
Hansteen F(2011)On-chip optical isolation in monolithically integrated non-reciprocal optical resonators Nat Photonics 5 758-1991
[4]  
Takeda H(2019)Monolithic integration of broadband optical isolators for polarization-diverse silicon photonics Optica 6 473-3194
[5]  
John S(2005)Optical circulators in two-dimensional magneto-optical photonic crystals Opt Lett 30 1989-490
[6]  
Bi L(2010)Magneto-optical circulator designed for operation in a uniform external magnetic field Opt Lett 35 568-59
[7]  
Hu J(2012)Compact three-port optical two-dimensional photonic crystal-based circulator of W-format Opt Lett 37 3192-4539
[8]  
Jiang P(1983)Two-dimensional magneto-optic spatial light modulator for signal processing Opt Eng 22 485-504
[9]  
Zhang Y(2003)An optical micro-magnetic device: magnetic-spatial light modulator J Magn 8 50-989
[10]  
Du Q(2007)Figures of merit of magneto-optic spatial light modulators with magnetophotonic crystals Phys Stat Sol (C) 4 4536-401