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arXiv 2108.07056physics.optics
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具有局域模和晶格模的二维铁石榴石纳米柱阵列的磁光特性

Magneto-optics of the 2D iron-garnet nanocylinder array with localized and lattice modes

Polina E. Zimnyakova, Daria O. Ignatyeva, Dolendra Karki, Andrey A. Voronov, Alexander N. Shaposhnikov, Vladimir N. Berzhansky, Miguel Levy, Vladimir I. Belotelov

摘要:

我们的实验表明,增强法拉第和横向磁光克尔效应的纳米柱的铋取代铁石榴石制成的二维阵列,并支持本地和晶格模式。这些模式的同时激发使得有可能增加3倍的法拉第旋转和TMOKE的数量级相比,相同的有效厚度的平滑磁膜。这两种磁光效应在宽的光谱和角度范围内增强,使得纳米柱阵列磁介电结构有希望用于短且紧密聚焦的激光脉冲的应用。

英文摘要:

We experimentally show the enhancement of the Faraday and transverse magneto-optical Kerr effects in the two-dimensional arrays of nanocylinders made of bismuth-substituted iron-garnet and supporting both localized and lattice modes. Simultaneous excitation of these modes makes it possible to increase the Faraday rotation by 3 times and TMOKE by an order of magnitude compared to the smooth magnetic film of the equal effective thickness. Both magneto-optical effects are enhanced in wide spectral and angular ranges making the nanocylinder array magnetic dielectric structures promising for applications with short and tightly-focused laser pulses.

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