Visualization of terahertz surface waves propagation on metal foils

被引：7
|
作者：
Wang, Xinke [1 ,2 ]
Wang, Sen [3 ]
Sun, Wenfeng [1 ,2 ]
Feng, Shengfei [1 ,2 ]
Han, Peng [1 ,2 ]
Yan, Haitao [1 ,2 ]
Ye, Jiasheng [1 ,2 ]
Zhang, Yan [1 ,2 ]
机构：
[1] Capital Normal Univ, Dept Phys, Beijing Key Lab Metamat & Devices, Beijing 100048, Peoples R China
[2] Minist Educ, Key Lab Terahertz Optoelect, Beijing 100048, Peoples R China
[3] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金; 北京市自然科学基金;
关键词：
EXCITATION; ARRAYS;
D O I：
10.1038/srep18768
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Exploitation of surface plasmonic devices (SPDs) in the terahertz (THz) band is always beneficial for broadening the application potential of THz technologies. To clarify features of SPDs, a practical characterization means is essential for accurately observing the complex field distribution of a THz surface wave (TSW). Here, a THz digital holographic imaging system is employed to coherently exhibit temporal variations and spectral properties of TSWs activated by a rectangular or semicircular slit structure on metal foils. Advantages of the imaging system are comprehensively elucidated, including the exclusive measurement of TSWs and fall-off of the time consumption. Numerical simulations of experimental procedures further verify the imaging measurement accuracy. It can be anticipated that this imaging system will provide a versatile tool for analyzing the performance and principle of SPDs.
引用
收藏
页数：6
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