如何在納米結構中控制的光的傳播，一直是物理和應用技術方面被廣泛研究的其中一個課題。在這篇論文中，我們從理論上探討在納米結構中表面等離子體激元(Surface plasmon polariton) 的特性以及其雜化。我們研究的納米結構包括金屬電介質金屬平板導波(chirped metaldielectric wave-guides) ，慘入納米金屬球的金屬電介質平板導波(metal dielectric waveguides with metallic narnoparticle doped)與光子晶體(photoniccrystals) 。 / 金屬-電介質-金屬平板導波由三層的金屬及電介質平板所組成，原本各自獨立存在於兩層金屬-介電介面的表面等離子體激元在兩層介面相距足夠近的情況下，會產生稱合作用而導致雜化表面等離子體激元(Hybridizedsurface plasmon polariton) 的產生，並且能在色散關係中被一條接近平坦、位於中頻附近的帶所表示。 / 同樣地，透過在金屬介電介面附近的電介質平板部份中加入納米金屬球，我們也能引起納米金屬球上的表面等離子體與平面金屬-介電介面上的表面等離子體激元之間的耦合作用，從而在色散關係產生另一條分支帶。 / 這些由雜化作用所導致的平坦的分支帶，其特性很容易透過操縱模型參數所改變。因此，我們可以在模型中引入一個介電常數(或厚度)的漸變梯度，從而達成表面等離子體激元的定域化，或多頻率表面等離子體激元(SPP rainbow) 的誘捕。 / 另外，透過轉移距列(transfer matrix)及哈密頓光學(Hamiltonian opticsapproach) 的應用，我們同時研究了表面等離子波在一維二元光子晶體中的斜入射色散關係及其傳播。結果證明，它可以用來引起波長尺度級別的表面等離子波的軌跡彎曲。 / Controlling the light propagation in nanostructures is one of the extensively studied topics in physics and technology. In this thesis, we theoretically investigate the behaviours of surface plasmon polariton (SPP) and the hybridized nanostructures, which include chirped metal-dielectric waveguides, metal-dielectric waveguides with metallic nanoparticle doped and photonic crystals. / In the system of chirped metal-dielectric waveguides which compose of metal-dielectric-metal multilayers, the evanescent coupling of the SPP waves at the two interfaces in the dielectric layer lead to a new hybridized surface plasmon polariton (HSPP) branch with a nearly flat dispersion at intermediate frequencies. / Similarly, by adding metallic nano-particles into the dielectric media, we can also achieve another HSPP branch which is caused by the coupling between the surface plasmon (SP) on the nanoparticles and SPP at the waveguide interface. Moreover, the nearly flat branch is tunable through changing the system parameters. Therefore by imposing a gradual variation of per-mittivity (or thickness), it is possible to achieve a localization of SPP wave, which is useful for achieving trapped SPP rainbow. / We also study at oblique incidence the dispersion relation and the propagation of SP in one dimension binary photonic crystals by using methods of transfer matrix and Hamiltonian optics approach. The result shows that it can be used to achieve a superbending of SP waves in wavelength scales. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Chau, Cheung Wai = 表面等離子光學及納米光學中的雜交化電磁極化子 / 鄒長威. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2012. / Includes bibliographical references (leaves 84-86). / Abstracts also in Chinese. / Chau, Cheung Wai = Biao mian deng li zi guang xue ji na mi guang xue zhong de za jiao hua dian ci ji hua zi / Zou Changwei. / Abstract --- p.i / 概要 --- p.iii / Acknowledgements --- p.v / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Plasmonics and nanophotonics --- p.1 / Chapter 1.2 --- Surface plasmon polaritons --- p.2 / Chapter 1.2.1 --- History of SPP --- p.2 / Chapter 1.2.2 --- Investigations and applications of SPPs --- p.3 / Chapter 1.3 --- Objective of thesis --- p.3 / Chapter 2 --- Basic principles --- p.5 / Chapter 2.1 --- Drude model --- p.5 / Chapter 2.2 --- SPP formalism --- p.7 / Chapter 2.2.1 --- SPP excitation --- p.9 / Chapter 2.3 --- Level repulsion phenomenon --- p.10 / Chapter 2.3.1 --- Simple coupled oscillator --- p.10 / Chapter 2.3.2 --- Diatomic elastic chain --- p.12 / Chapter 2.3.3 --- Summary --- p.13 / Chapter 2.4 --- Transfer matrix method --- p.14 / Chapter 2.5 --- Hamiltonian optics approach --- p.16 / Chapter 2.6 --- Maxwell Garnett approximation --- p.17 / Chapter 3 --- Thomson plasmonics --- p.20 / Chapter 3.1 --- Introduction --- p.21 / Chapter 3.2 --- Model and scheme --- p.21 / Chapter 3.3 --- HSPP formalism --- p.22 / Chapter 3.4 --- HSPP bands with varying inclusions of metallic nanospheres --- p.23 / Chapter 3.5 --- Confinement scheme --- p.25 / Chapter 3.6 --- HO simulation and localization --- p.26 / Chapter 3.6.1 --- Center excitation --- p.28 / Chapter 3.6.2 --- Off center excitation --- p.30 / Chapter 3.7 --- Tunability and fabrication --- p.31 / Chapter 3.8 --- Complications and loss --- p.33 / Chapter 3.9 --- Summary --- p.33 / Chapter 4 --- Chirped metal-dielectric waveguides --- p.41 / Chapter 4.1 --- Introduction --- p.42 / Chapter 4.2 --- Model and scheme --- p.42 / Chapter 4.3 --- SPP formalism --- p.43 / Chapter 4.4 --- HSPP bands with varying permittivity and thickness --- p.45 / Chapter 4.5 --- Confinement scheme --- p.46 / Chapter 4.5.1 --- Varying permittivity --- p.47 / Chapter 4.5.2 --- Varying thickness --- p.47 / Chapter 4.6 --- Ho simulation and localization --- p.48 / Chapter 4.6.1 --- Varying permittivity --- p.49 / Chapter 4.6.2 --- Varying thickness --- p.51 / Chapter 4.7 --- Summary --- p.53 / Chapter 5 --- Dispersion and mirage of surface plasmon waves in metallic photonic crystals --- p.60 / Chapter 5.1 --- Photonic crystal --- p.60 / Chapter 5.2 --- Introduction --- p.61 / Chapter 5.3 --- Dispersion relation formalism --- p.61 / Chapter 5.4 --- Graded material --- p.64 / Chapter 5.5 --- Ho simulation --- p.65 / Chapter 5.6 --- Results --- p.66 / Chapter 5.6.1 --- Lowest band excitation --- p.66 / Chapter 5.6.2 --- Second lowest band excitation --- p.69 / Chapter 5.6.3 --- Multiangle incidence --- p.71 / Chapter 5.7 --- Summary --- p.72 / Chapter 6 --- Conclusion --- p.82 / Bibliography --- p.84
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_328586 |
| Date | January 2012 |
| Contributors | Chau, Cheung Wai., Chinese University of Hong Kong Graduate School. Division of Physics. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | electronic resource, electronic resource, remote, 1 online resource (xi, 86 leaves) : ill. (some col.) |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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