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arXiv 1606.08754physics.optics
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在一般散射方向上的旋光性的对偶和手性物体

Dual and chiral objects for optical activity in general scattering directions

Ivan Fernandez-Corbaton, Martin Fruhnert, Carsten Rockstuhl

备注：
This document is the unedited Authors version of a Submitted Work that was subsequently accepted for publication in ACS Photonics, copyright American Chemical Society after peer review. To access the final edited and published work see http://pubs.acs.org/articlesonrequest/AOR-3yvzAibCIU6wdTuzx9cE
发表信息：
ACS Photonics 2015 2 (3), 376-384
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摘要：

光学活性人工结构已经引起了人们的极大关注。这种结构必须满足两个要求：缺乏空间反转对称性，以及通常不明确考虑的条件，该结构应保持光的螺旋性，这意味着入射和散射平面波之间的相反偏振旋向状态之间必须存在消失的耦合。在这里，我们提出并证明了由手性排列的电磁双散射体构成的单胞正是为了这个目的。我们证明了这一点，通过展示在一般散射方向的这种单位细胞的旋光性。

英文摘要：

Optically active artificial structures have attracted tremendous research attention. Such structures must meet two requirements: Lack of spatial inversion symmetries and, a condition usually not explicitly considered, the structure shall preserve the helicity of light, which implies that there must be a vanishing coupling between the states of opposite polarization handedness among incident and scattered plane waves. Here, we put forward and demonstrate that a unit cell made from chiraly arranged electromagnetically dual scatterers serves exactly this purpose. We prove this by demonstrating optical activity of such unit cell in general scattering directions.

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