Observation of optical polarization Mobius strips
Observation of optical polarization Mobius strips
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DOI：
10.1126/science.1260635
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发表时间：
2015-02-27
期刊：
影响因子：
56.9
通讯作者：
Leuchs, Gerd
中科院分区：
文献类型：
--
作者：
Bauer, Thomas;Banzer, Peter;Leuchs, Gerd
莫比乌斯带是一种三维几何结构，其独特的性质是只有一个“边”的表面，或者更严格地说，是“不可定向”的表面。尽管很容易人工实现，但这些结构在自然界中的自发出现是非常罕见的。在这里，我们通过紧密聚焦来自q板的光束来产生光学偏振的莫比乌斯带，q板是一种以空间变化方式修改光的偏振的液晶设备。使用最近开发的三维纳米层析成像的光学矢量场的方法，我们完全重建的光的偏振结构的焦点区域，确认莫比乌斯偏振结构的外观。这种结构化光模式的制备对于复杂光束工程和光学微纳米制造可能是重要的。
Mobius strips are three-dimensional geometrical structures, fascinating for their peculiar property of being surfaces with only one "side"-or, more technically, being "nonorientable" surfaces. Despite being easily realized artificially, the spontaneous emergence of these structures in nature is exceedingly rare. Here, we generate Mobius strips of optical polarization by tightly focusing the light beam emerging from a q-plate, a liquid crystal device that modifies the polarization of light in a space-variantmanner. Using a recently developed-method for the three-dimensional nanotomography of optical vector fields, we fully reconstruct the light polarization structure in the focal region, confirming the appearance of Mobius polarization structures. The preparation of such structured light modes may be important for complex light beam engineering and optical micro-and nanofabrication.