A planar chiral meta-surface for optical vortex generation and focusing

作者：Ma Xiaoliang; Pu Mingbo; Li Xiong; Huang Cheng; Wang Yanqin; Pan Wenbo; Zhao Bo; Cui Jianhua; Wang Changtao; Zhao Zeyu; Luo Xiangang^*

来源：Scientific Reports, 2015, 5(1): 10365.

DOI：10.1038/srep10365

Data capacity is rapidly reaching its limit in modern optical communications. Optical vortex has been explored to enhance the data capacity for its extra degree of freedom of angular momentum. In traditional means, optical vortices are generated using space light modulators or spiral phase plates, which would sharply decrease the integration of optical communication systems. Here we experimentally demonstrate a planar chiral antenna array to produce optical vortex from a circularly polarized light. Furthermore, the antenna array has the ability to focus the incident light into point, which greatly increases the power intensity of the generated optical vortex. This chiral antenna array may have potential application in highly integrated optical communication systems.

• 出版日期2015-5-19
• 单位中国科学院光电技术研究所