Diffraction from carbon nanofiber arrays.
Diffraction from carbon nanofiber arrays.
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DOI：
10.1364/ol.37.000100
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发表时间：
2012
期刊：
影响因子：
3.6
通讯作者：
R. Rehammar;Y. Francescato;A. Fernández-Domínguez;S. A. Maier;J. Kinaret;E. E. B. Campbell-E.
中科院分区：
文献类型：
--
作者：
R. Rehammar;Y. Francescato;A. Fernández-Domínguez;S. A. Maier;J. Kinaret;E. E. B. Campbell-E.
采用电子束光刻和化学气相沉积技术制备了由碳纳米纤维构成的正方形平面光子晶体。对该系统的衍射特性进行了实验表征，并与理论和数值模拟进行了比较。（-1，0）和（-1，-1）衍射光束的强度被测量为s和p偏振的入射角的函数。所获得的辐射图案可以解释使用一个简单的射线干涉模型，但有限差分时域（FDTD）计算是必要的再现所观察到的入射激光偏振的散射辐射强度的依赖关系。我们解释这方面的纳米纤维的纵横比和在基板界面处的表面等离子体激元的激发。
A square planar photonic crystal composed of carbon nanofibers was fabricated using e-beam lithography and chemical vapor deposition. The diffraction properties of the system were characterized experimentally and compared with theory and numerical simulations. The intensities of the (-1,0) and (-1,-1) diffraction beams were measured as functions of the angles of incidence for both s and p-polarization. The obtained radiation patterns can be explained using a simple ray interference model, but finite-difference time-domain (FDTD) calculations are necessary to reproduce the observed dependence of the scattered radiation intensity on incident laser polarization. We explain this in terms of the aspect ratio of the nanofibers and the excitation of surface plasmon polaritons at the substrate interface.