Abstract
We present the design, numerical simulations and experimental measurements of terahertz metamaterial absorbers with a broad and flat absorption top over a wide incidence angle range for either transverse electric or transverse magnetic polarization depending on the incident direction. The metamaterial absorber unit cell consists of two sets of structures resonating at different but close frequencies. The overall absorption spectrum is the superposition of individual components and becomes flat at the top over a significant bandwidth. The experimental results are in excellent agreement with numerical simulations.
©2012 Optical Society of America
Full Article | PDF ArticleOSA Recommended Articles
Xu Chen and Wenhui Fan
Appl. Opt. 54(9) 2376-2382 (2015)
Zhaoxian Su, Jianbo Yin, and Xiaopeng Zhao
Opt. Express 23(2) 1679-1690 (2015)
Xu Zhang, Hongqiang Li, Zeyong Wei, and Limei Qi
Opt. Mater. Express 7(9) 3294-3302 (2017)