A Photoexcited Broadband Absorption Based on Au Nano Cross Elliptical Disks Structure with Polarization-Insensitive and Wide-Angle for Visible Light
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- 作者：Xiuli Jia ; Xiaoou Wang ; Zhongxiang Zhou ; Qingxin Meng
- 关键词：Metamaterial ; Absorption ; Hybrid surface plasmon ; Polarization ; insensitive ; FDTD
- 刊名：Plasmonics
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：12
- 期：1
- 页码：165-170
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Biotechnology; Nanotechnology; Biophysics and Biological Physics; Biochemistry, general;
- 出版者：Springer US
- ISSN：1557-1963
- 卷排序：12
文摘
We present the design and numerical simulations of a polarization-insensitive and wide-angle photoexcited broadband metamaterial absorption in the visible region base on Au nano cross elliptical disks structure. The Au nano cross elliptical disks structure comprises a periodic array of metal-dielectric multilayered structure and a no transmission metallic functional layer on the bottom. Utilizing 3D finite difference time domain (FDTD) algorithm, the hybrid surface plasmon and the polarization-insensitive absorption of above 90 % for a wide range of incident angles of 40° are observed in the whole visible light (3.8–7.8 × 1014 Hz).