Bethe-hole polarization analyser for the magnetic vector of light.
Bethe-hole polarization analyser for the magnetic vector of light.
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DOI：
10.1038/ncomms1430
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发表时间：
2011-08-23
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
光作为具有横向分量的电磁波的性质已经使用光学偏振器证实，光学偏振器对电场的方向敏感。纳米光学技术的最新进展需要它们的磁性对应物，它可以感测光磁场的方向。在这里，我们报告说，无限平面上的亚波长金属孔径主要感测光的磁场，建立光的磁分量的方向作为一个独立的实体从其电对应物。与锥形光纤探针相结合的亚波长孔径也可以用作光磁场的纳米级偏振分析器，类似于纳米颗粒感测局部电极化。作为其功能的证明，我们演示了测量的磁场方向是平行的电场，以及在线性极化电场的存在下的圆极化磁场。确定光的磁场方向对于光学应用是重要的。在这里，从金属平面中的亚波长孔径的光的散射示出由其磁矢量，提供独立于电场的磁场取向。
The nature of light as an electromagnetic wave with transverse components has been confirmed using optical polarizers, which are sensitive to the orientation of the electric field. Recent advances in nanoscale optical technologies demand their magnetic counterpart, which can sense the orientation of the optical magnetic field. Here we report that subwavelength metallic apertures on infinite plane predominantly sense the magnetic field of light, establishing the orientation of the magnetic component of light as a separate entity from its electric counterpart. A subwavelength aperture combined with a tapered optical fibre probe can also serve as a nanoscale polarization analyser for the optical magnetic field, analogous to a nanoparticle sensing the local electric polarization. As proof of its functionality, we demonstrate the measurement of a magnetic field orientation that is parallel to the electric field, as well as a circularly polarized magnetic field in the presence of a linearly polarized electric field. Determining the direction of the magnetic field of light is important for optical applications. Here, scattering of light from a subwavelength aperture in a metal plane is shown to be governed by its magnetic vector, providing the magnetic field orientation independently of the electric field.
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影响因子：
64.8
作者：
Ebbesen, TW;Lezec, HJ;Wolff, PA
通讯作者：
Wolff, PA
影响因子：
2.4
作者：
Degiron, A;Lezec, HJ;Ebbesen, TW
通讯作者：
Ebbesen, TW
影响因子：
10.8
作者：
Mirin, Nikolay A.;Halas, Naomi J.
通讯作者：
Halas, Naomi J.
影响因子：
8.6
作者：
Burresi, M.;Kampfrath, T.;Kuipers, L.
通讯作者：
Kuipers, L.
影响因子：
35
作者：
Alu, Andrea;Engheta, Nader
通讯作者：
Engheta, Nader