Zimnyakova Polina E, Ignatyeva Daria O, Karki Dolendra, Voronov Andrey A, Shaposhnikov Alexander N, Berzhansky Vladimir N, Levy Miguel, Belotelov Vladimir I
Moscow Institute of Physics and Technology, National Research University, Dolgoprudny, Moscow 141701, Russia.
Russian Quantum Center, Moscow, Russia.
Nanophotonics. 2021 Nov 4;11(1):119-127. doi: 10.1515/nanoph-2021-0534. eCollection 2022 Jan.
We demonstrate a novel all-dielectric magnetophotonic structure that consists of two-dimensional arrays of bismuth substituted iron-garnet nanocylinders supporting both localized (Fabry-Perot-like) and lattice (guided-like) optical modes. Simultaneous excitation of the two kinds of modes provides a significant enhancement of the Faraday effect by 3 times and transverse magneto-optical Kerr effect by an order of magnitude compared to the smooth magnetic film of the same effective thickness. Both magneto-optical effects are boosted in wide spectral and angular ranges making the nanocylinder array magnetic dielectric structures promising for applications with short and tightly focused laser pulses.
我们展示了一种新型的全介质磁光光子结构，它由铋取代的铁石榴石纳米圆柱的二维阵列组成，该阵列支持局域（类法布里-珀罗）和晶格（类导模）光学模式。与具有相同有效厚度的光滑磁性薄膜相比，同时激发这两种模式可使法拉第效应显著增强3倍，横向磁光克尔效应增强一个数量级。这两种磁光效应在宽光谱和角度范围内都得到了增强，使得纳米圆柱阵列磁介质结构有望应用于短脉冲和强聚焦激光脉冲。
