金屬介電質奈米複合光柵結構之表面電漿性質

由於奈米金屬結構的表面電漿性質,可使光聚縮到奈米等級、操控表面電場分佈等諸多光學特性,電漿子學在奈米光子學的領域中有非常好的應用前景,這篇論文我們將探討金屬介電質奈米複合光柵結構的表面電漿性質,並提出利用奈米壓印顯影術製作此大面積特殊結構的方法。在實驗與模擬變入射角反射光譜的分析中,發現此結構有位於可見光波段的法布裡 -珀羅共振性質,且與理論有相當好的一致性, 也對表面電漿極化子與法布裡 -珀羅共振的電漿子偶合現象做出定性的解釋。此元件的共振腔結構具有強電場增強、高品質因子及高敏感度的特性,在電漿子積體電路、生物感測元件或原子陷阱等應用方面有很好的潛力。

關鍵字

表面電漿極化子；法布裡-珀羅共振；間隙電漿極化子；奈米壓印顯影術；有限元素法；電漿子偶合；瑞利反常

並列摘要

Plasmonics metallic nanostructures can confine and manipulate light down to nanoscale, and give promising scenarios for nanophotonic applications. In this thesis, we have designed and fabricated a new hybrid nanostructure, dielectric-embedded metallic grating, via large patterning nanoimprimt lithog- raphy technique. The plasmonics properties of Fabry-Perot resonance in such device are investigated both experimentally and theoretically. The anticross- ing behavior due to the strong coupling between the surface plasmon polari- tons and Fabry-Perot resonace is observed and explained qualitatively quite well. Our newly designed geometry possesses high electric field enhance- ment, high quality factors and great sensitivity, which will open up a new potential in applications such as integrated plasmonic circuits, bio sensing, atom-trap, etc.

並列關鍵字

Surface plasmon polaritons ； Fabry-Perot resonace ； Gap plasmon polaritons ； Nanoimprimt lithography ； Finite element method ； Plasmon coupling ； Rayleigh anomaly

參考文獻

Chapter 1

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[3] Lukas Novotny and Niek van Hulst. Antennas for light. Nat Photon, 5(2):83--90, 02 2011.

[4] Dmitri K. Gramotnev and Sergey I. Bozhevolnyi. Plasmonics beyond the diffraction limit. Nat Photon, 4(2):83--91, 02 2010.

[5] JonA.Schuller,EdwardS.Barnard,WenshanCai,YoungChulJun,JustinS.White, and Mark L. Brongersma. Plasmonics for extreme light concentration and manipu- lation. Nat Mater, 9(3):193--204, 03 2010.

國際替代計量

金屬介電質奈米複合光柵結構之表面電漿性質

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