Three-dimensional orientation-unlimited polarization encryption by a single optically configured vectorial beam.
Three-dimensional orientation-unlimited polarization encryption by a single optically configured vectorial beam.
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DOI：
10.1038/ncomms2006
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发表时间：
2012
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
光的偏振和物质之间的相互作用是许多基本物理过程和应用的基础。然而，光在自由空间中的电磁波性质对光束的三维偏振取向设置了基本限制。虽然可以使用高数值孔径物镜来弯曲径向偏振光束的波前以在焦体积中产生纵向偏振态，但是还没有实现光束的任意三维偏振取向。在这里，我们提出了一种新的技术，用于产生任意的三维偏振取向由一个单一的光学配置的矢量光束。因此，通过将该技术应用于金纳米棒，展示了具有超安全性的取向无限偏振加密。这些结果代表了光-物质相互作用的取向无限三维偏振控制的一个新的里程碑。产生任意方向的光偏振一直是一个难以实现的目标，但它是重要的光与纳米物体的相互作用。通过结合方位角和径向偏振光束，Li等人克服了这一障碍，并展示了其在金纳米棒偏振加密中的应用。
The interplay between light polarization and matter is the basis of many fundamental physical processes and applications. However, the electromagnetic wave nature of light in free space sets a fundamental limit on the three-dimensional polarization orientation of a light beam. Although a high numerical aperture objective can be used to bend the wavefront of a radially polarized beam to generate the longitudinal polarization state in the focal volume, the arbitrary three-dimensional polarization orientation of a beam has not been achieved yet. Here we present a novel technique for generating arbitrary three-dimensional polarization orientation by a single optically configured vectorial beam. As a consequence, by applying this technique to gold nanorods, orientation-unlimited polarization encryption with ultra-security is demonstrated. These results represent a new landmark of the orientation-unlimited three-dimensional polarization control of the light–matter interaction. Generating arbitrary orientation of light polarization has been an elusive goal, yet it is important to light interactions with nano-objects. By combining azimuthally and radially polarized beams, Li et al. overcome this obstacle and demonstrate its use for polarization-based encryption with gold nanorods.
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影响因子：
8.6
作者：
Abouraddy, AF;Toussaint, KC
通讯作者：
Toussaint, KC
影响因子：
1.5
作者：
Lan, Tzu-Hsiang;Tien, Chung-Hao
通讯作者：
Tien, Chung-Hao
影响因子：
8.6
作者：
Novotny, L;Beversluis, MR;Brown, TG
通讯作者：
Brown, TG
DOI：
10.1073/pnas.0808365105
发表时间：
2008-10-28
影响因子：
11.1
作者：
Shegai, Timur;Li, Zhipeng;Haran, Gilad
通讯作者：
Haran, Gilad
DOI：
10.1073/pnas.0504892102
发表时间：
2005-11-01
影响因子：
11.1
作者：
Wang, HF;Huff, TB;Cheng, JX
通讯作者：
Cheng, JX