1
|
Pang Y, Wang J, Ma H, Feng M, Li Y, Xu Z, Xia S, Qu S. Spatial k-dispersion engineering of spoof surface plasmon polaritons for customized absorption. Sci Rep 2016; 6:29429. [PMID: 27389309 PMCID: PMC4937418 DOI: 10.1038/srep29429] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/17/2016] [Indexed: 12/02/2022] Open
Abstract
Absorption of electromagnetic waves in a medium is generally manipulated by controlling the frequency dispersion of constitutive parameters. However, it is still challenging to gain the desired constitutive parameters for customized absorption over a broad frequency range. Here, by virtue of spoof surface plasmonic polaritons (SPPs), we demonstrate capabilities of the spatial k-dispersion engineering for producing the customized broadband absorption. Incident waves can be efficiently converted to the spoof SPPs by plasmonic arrays, and their propagation and/or absorption can be controlled by engineering the spatial dispersion of k-vector. Based on this feature, we show how such concept is employed to achieve broadband as well as frequency-selective broadband absorptions as examples. It is expected that the proposed concept can be extended to other manipulations of propagating electromagnetic waves over a broad frequency range.
Collapse
Affiliation(s)
- Yongqiang Pang
- School of Electronics &Information Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, People's Republic of China.,College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| | - Jiafu Wang
- College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| | - Hua Ma
- College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| | - Mingde Feng
- College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| | - Yongfeng Li
- College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| | - Zhuo Xu
- School of Electronics &Information Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, People's Republic of China
| | - Song Xia
- School of Electronics &Information Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, People's Republic of China
| | - Shaobo Qu
- College of Science, Air Force Engineering University, Xi'an, Shaanxi 710051, People's Republic of China
| |
Collapse
|