关键词: 超材料/
太赫兹/
频率选择表面/
超衍射
English Abstract
Super diffraction imaging with wave vector selective metasurface
Guo Chang,Zhang Yan
1.Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing Key Laboratory of Metamaterials and Devices, Beijing Advanced Innovation Center for Imaging Technology, Department of Physics, Capital Normal University, Beijing 100048, China
Fund Project:Project supported by the National Basic Research Program of China (Grant No. 2013CBA01702), the National Natural Science Foundation of China (Grant Nos. 11474206, 91233202, 11374216, 11404224), the Program for New Century Excellent Talents in University, China (Grant No. NCET-12-0607), and the Scientific Research Project of Beijing Education Commission, China (Grant No. KM201310028005).Received Date:17 May 2017
Accepted Date:13 July 2017
Published Online:05 July 2017
Abstract:Super diffraction imaging has been a research hotspot for a long time. We realize the super diffraction imaging with a metasurface structure, which is consisted of asymmetrically split rings. Based on the wave vector selectivity of the metasurface, radiation can be transmitted through it only in a narrow range of the incident angular. The metasurface acts as a high frequency spatial filter, reduces the diffraction effect, and obtains the super diffraction resolution. Numerical simulation results demonstrate the validity of this method.
Keywords: metamaterials/
terahertz/
frequency selective surface/
super-diffraction
