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Surface plasmon polaritons and waveguide modes at structured and inhomogeneous surfaces.

机译：在结构化和非均匀表面上的表面等离激元极化子和波导模式。

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摘要

In chapter 1, properties of a p-polarized surface plasmon polariton are studied, propagating circumferentially around a portion of a cylindrical interface between vacuum and a metal, a situation investigated earlier by M. V. Berry (J. Phys. A: Math. Gen. 8, (1975) 1952). When the metal is convex toward the vacuum this mode is radiative and consequently is attenuated as it propagates on the cylindrical surface. An approximate analytic solution of the dispersion relation for this wave is obtained by an approach different from the one used by Berry, and plots of the real and imaginary parts of its wave number are presented. When the metal is concave to the vacuum, the resulting dispersion relation possesses a multiplicity of solutions that have the nature of waveguide modes that owe their existence to the curvature of the interface.;In chapter 2, the reduced Rayleigh equation for the scattering of a surface plasmon polariton incident normally on a one-dimensional ridge or groove on an otherwise planar metal surface is solved by a purely numerical approach. The solution is used to calculate the reflectivity and transmissivity of the surface plasmon polariton, and its conversion into volume electromagnetic waves in the vacuum above the metal surface. The results obtained are compared with those of earlier calculations of these quantities.;In chapter 3, the results of the previous chapter are extended to the scattering of a surface plasmon polariton incident non-normally on a one-dimensional ridge or groove on an otherwise planar metal surface. As before, the reflectivity and transmissivity of the surface plasmon polariton are calculated, and its conversion into volume electromagnetic waves in the vacuum above the metal surface.;In chapter 4, the dynamics of the scattering of surface plasmon polariton (SPP) pulses are investigated theoretically, by single nanoscale metal Gaussian defects through a rigorous calculation of the time dependence of the reflected and transmitted SPP and of the angular distribution of the scattered light.
机译：在第1章中，研究了p极化表面等离振子极化的性质，其在真空和金属之间的圆柱形界面的一部分周围沿圆周传播，这是MV Berry早前所研究的情况（J. Phys。A：Math。Gen. 8 ，（1975）1952）。当金属向真空凸面时，该模式是辐射的，因此当其在圆柱表面上传播时被衰减。通过不同于Berry的方法，获得了该波的色散关系的近似解析解，并给出了其波数的实部和虚部的图。当金属对真空凹入时，所得的色散关系具有多种解，这些解具有波导模的性质，这归因于其界面的曲率。第二章，简化的瑞利方程，用于散射a通常通过纯数值方法解决通常入射在原本平坦的金属表面上的一维脊或凹槽上的表面等离振子极化。该解决方案用于计算表面等离激元极化子的反射率和透射率，并在金属表面上方的真空中将其转换为体积电磁波。将获得的结果与这些数量的较早计算结果进行比较。；在第3章中，上一章的结果扩展到了非正常入射在一维脊或凹槽上的表面等离子体激元极化子的散射。平面金属表面。如前所述，计算了表面等离子体激元的反射率和透射率，并在金属表面上方的真空中将其转换为体积电磁波。第四章研究了表面等离子体激元（SPP）脉冲的散射动力学。从理论上讲，通过对反射和透射的SPP的时间依赖性以及散射光的角度分布进行严格的计算，可以得到单个纳米级金属高斯缺陷。

著录项

  • 作者

    Polanco, Javier.;

  • 作者单位

    The University of Texas at El Paso.;

  • 授予单位 The University of Texas at El Paso.;
  • 学科 Electromagnetics.;Optics.;Nanoscience.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 126 p.
  • 总页数 126
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 语言学;
  • 关键词

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