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https://ir.lib.ncu.edu.tw/handle/987654321/103524
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| 題名: | High-efficiency broadband anomalous reflection by gradient meta-surfaces |
| 作者: | 王智明;Sun, Shulin;Yang, Kuang-Yu;Wang, Chih-Ming;Juan, Ta-Ko;Chen, Wei Ting;Liao, Chun Yen;He, Qiong;Xiao, Shiyi;Kung, Wen-Ting;Guo, Guang-Yu;Zhou, Lei;Tsai, Din Ping |
| 貢獻者: | 理學院光電科學與工程學系 |
| 關鍵詞: | Angle of reflection;Antireflection coatings;Broadband;Collective excitations (including excitons, polarons, plasmons and other charge-density excitations);Condensed matter: electronic structure, electrical, magnetic, and optical properties;Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures;Exact sciences and technology;Finite difference time domain method;Nanostructure;Physics;Polarization;Reflection;Spectra;Surface and interface electron states;Surface waves |
| 日期: | 2012-12-12 |
| 上傳時間: | 2026-04-23 11:32:10 (UTC+8) |
| 出版者: | American Chemical Society;Washington, DC: American Chemical Society |
| 摘要: | 摘要： We combine theory and experiment to demonstrate that a carefully designed gradient meta-surface supports high-efficiency anomalous reflections for near-infrared light following the generalized Snell’s law, and the reflected wave becomes a bounded surface wave as the incident angle exceeds a critical value. Compared to previously fabricated gradient meta-surfaces in infrared regime, our samples work in a shorter wavelength regime with a broad bandwidth (750–900 nm), exhibit a much higher conversion efficiency (∼80%) to the anomalous reflection mode at normal incidence, and keep light polarization unchanged after the anomalous reflection. Finite-difference-time-domain (FDTD) simulations are in excellent agreement with experiments. Our findings may lead to many interesting applications, such as antireflection coating, polarization and spectral beam splitters, high-efficiency light absorbers, and surface plasmon couplers.
其他題名： Nano Lett
出版者： Washington, DC: American Chemical Society
出版日期： 2012-12-12
出處： Nano Letters, 2012-12, Vol.12 (12), p.6223-6229
資源來源： American Chemical Society Journals
版權： Copyright © 2012 American Chemical Society
版權： 2014 INIST-CNRS
識別號： ISSN: 1530-6984
識別號： ISSN: 1530-6992
識別號： EISSN: 1530-6992
識別號： DOI: 10.1021/nl3032668
識別號： PMID: 23189928 |
| 顯示於類別: | [光電科學與工程學系] 期刊論文
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