目前的納米技術(shù)能夠?qū)崿F(xiàn)衍射極限的突破以及電磁波亞波長尺度的壓縮,對光子學(xué)及相關(guān)學(xué)科的未來發(fā)展具有深遠(yuǎn)的影響。這一顯著的進(jìn)步在于所激發(fā)的表面等離激元,包括金屬中的等離激元、電介質(zhì)中的光學(xué)聲子以及半導(dǎo)體中的激子等。等離激元能夠用于新型納米尺度器件的設(shè)計,實(shí)現(xiàn)亞波長尺度電磁波的束縛和調(diào)控,可以用于未來納米尺度集成光電子器件、超分辨率成像、量子計算和單分子捕獲方面的設(shè)計。納米聚焦作為納米光子學(xué)領(lǐng)域的一個重要領(lǐng)域,能夠在納米尺度對電磁波能量進(jìn)行傳遞和調(diào)控,相應(yīng)的產(chǎn)生了許多設(shè)計、優(yōu)化和制造新型聚焦器件的技術(shù)。本文對二維材料中實(shí)現(xiàn)亞波長能量約束現(xiàn)象（TE聲子極化模式）進(jìn)行了預(yù)測和表征,并針對納米聚焦器件提出了一種彌補(bǔ)理論設(shè)計與實(shí)際實(shí)現(xiàn)之間差距的新方法。本論文各章節(jié)的簡要總結(jié)如下:1.盡管極化激元對于亞波長的束縛性十分重要,但現(xiàn)有的研究工作和實(shí)現(xiàn)的器件大多集中在TM模式。近期通過對石墨烯的研究,科學(xué)家預(yù)測二維材料中可能存在TE極化模式。在這項工作中,我們首次預(yù)測了超薄hBN平板中的TE極化激元模式,獲得了遠(yuǎn)優(yōu)于石墨烯TE極化模式的束縛性。這項工作讓人們對TE極化模式有了更多的了解,并為TE極化模式的實(shí)... 

【文章來源】：浙江大學(xué)浙江省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：91 頁

【學(xué)位級別】：博士

【文章目錄】：
Abstract
摘要
Dedication
Acronyms
Chapter One
    1.1 Introduction
    1.2 Photonics and the diffraction limit
    1.3 Bulk surface polaritons
    1.4 Transformation optics
    1.5 Hyperbolic metamaterials
    1.6 Effective medium theory
    1.7 Thesis outline
Chapter Two Background on two-dimensional polaritons and nanofocusing
    2.1 Introduction
    2.2 Two-dimensional materials and their polaritons
        2.2.1. Background of TE polaritons in two-dimensional materials
    2.3 Optical response of two-dimensional materials
        2.3.1 Optical property of graphene
        2.3.2 Optical property of hBN
    2.4 Electrodynamics of two-dimensional materials polaritons
        2.4.1 TM dispersion of two-dimensional materials
        2.4.2 TE dispersion of two-dimensional polaritons
    2.5 Nanofocusing
        2.5.1 Background of nanofocusing phenomena
        2.5.2 Nanofocusing based on transformation optics
    2.6 Probing near field photonics
Chapter Three Transverse electric phonon polaritons in /?BN and plasmonpolaritons in graphene
    3.1 Introduction
    3.2.Theoretical background
    3.3.Properties of TE plasmons in graphene
    3.4.Properties of TE phonons in hBN
    3.5.Manifestation of TE phonon polaritons in hBN
    3.6.Comparisons between TE plasmons in graphene and TE phonons in hBN
    3.7.Existence condition of TE phonon polaritons in asymmetric environment
    3.8.Effect of different optical response model of hBN to the TE polaritons
    3.9 Conclusion
Chapter Four Mid-infrared nanofocusing based on Fragmented-high-ordertransformation optics （FHTO）
    4.1 Introduction
    4.2 Nanofocusing based on high-order transformation optics
    4.3 Azimuthal transformation
    4.4 Fragmented high-order transformation optics
    4.5 Performance comparison of the FHTO with UHTO
    4.6 Discussions
    4.7 Non-paraxial 2D Gaussian beam
    4.8 Effects of the fabrication error to the performance
    4.9 Conclusion
Chapter Five Conclusion and future work
    5.1 Conclusion
    5.2 Other projects
        5.2.1 Giant field enhancement at the transition between gain-loss media
        5.2.2 Bifunctional acoustic metamaterials lens designed with coordinatetransformation
        5.2.3 Manipulating surface plasmons polaritons with infinitely anisotropicmetamaterials
        5.2.4 Toroidal localized spoof plasmons on compact metadisks
        5.2.5 Launching phase-controlled surface plasmons on Babinet metasurfaces
        5.2.6 Analog of giant magneto-impedance in magnetized ε-near-zero plasma
        5.2.7 Structure-induced hyperbolic dispersion in waveguides
Appendix
Bibliography
Acknowledgements
List of publications
Other contributing publications
Funding



本文編號：3019080