<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

學術出版;;Publications

Permanent URI for this communityhdl:11536/1

收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

Browse

🏛️國立陽明交通大學機構典藏

Subject: search.filters.subject.surface plasmon

Search Results

Now showing 1 - 10 of 18
  • Thumbnail Image
    Item type:Item,
    Plasmonic nanolasers based on graphene-insulator-metal platform
    (2019-01-01)
    Lu, Tien-Chang
    ;
    光電工程學系
    ;
    Department of Photonics
    The development of laser miniaturizing is never stop; several kinds of approaches such as microdisk lasers and nanowire lasers, have been exploited to scale down the sizes of cavity by using surface plasmons in replacement of photonic resonance in the laser cavity. Graphene is a membrane with thickness of only one atom and the carrier mobility can be as high as about 15000 cm(2)/V.s. Until now graphene has been widely used for many optoelectronics applications, for example, ultrafast photodetector, modulator, biosensor, transparent electrode and so on. As far as plasmonic laser is concerned, since the insulator layer on the metal structure is required to be very thin, it seems to be feasible to add a single-layered graphene in between the nanowire and metal while preserving the capability of forming surface plasmon polariton (SPP). Besides, we would like to take advantage of good electrical property of graphene to make a plasmonic nanolaser which can be modulated by externally applied current. By adding graphene on the insulator can form a versatile platform, called graphene-insulator-metal (GIM) structure, that can modulate the plasmonic wave characteristics. In this study, we successfully fabricated and demonstrated the SPP nanolaser on GIM structure. The lasing threshold of ZnO nanowire on aluminum with graphene was lower than that without graphene. It was attributed to the changes of plasmon frequency of metal resulting from the induced electrons or holes by graphene.
  • Thumbnail Image
    Item type:Item,
    Plasmonic Nanolasers Enhanced by Hybrid Graphene-Insulator-Metal Structures
    (2019-08-01)
    Li, Heng
    ;
    Li, Jhu-Hong
    ;
    Hong, Kuo-Bin
    ;
    Yu, Min-Wen
    ;
    Chun, Yi-Cheng
    Graphene is a two-dimensional (2D) structure that creates a linear relationship between energy and momentum that not only forms massless Dirac fermions with extremely high group velocity but also exhibits a broadband transmission from 300 to 2500 nm that can be applied to many optoelectronic applications, such as solar cells, light-emitting devices, touchscreens, ultrafast photodetectors, and lasers. Although the plasmonic resonance of graphene occurs in the terahertz band, graphene can be combined with a noble metal to provide a versatile platform for supporting surface plasmon waves. In this study, we propose a hybrid graphene-insulator-metal (GIM) structure that can modulate the surface plasmon polariton (SPP) dispersion characteristics and thus influence the performance of plasmonic nanolasers. Compared with values obtained when graphene is not used on an Al template, the propagation length of SPP waves can be increased 2-fold, and the threshold of nanolasers is reduced by 50% when graphene is incorporated on the template. The GIM structure can be further applied in the future to realize electrical control or electrical injection of plasmonic devices through graphene.
  • Thumbnail Image
    Item type:Item,
    Tuning the Characteristics of Surface Plasmon Polariton Nanolasers by Tailoring the Dispersion Relation
    (2017-01-01)
    Lu, Tien-Chang
    ;
    Chou, Yu-Hsun
    ;
    Hong, Kuo-Bin
    ;
    Chung, Yi-Cheng
    ;
    Lin, Tzy-Rong
    Nanolasers with ultra-compact footprint are able to provide high intensity coherent light, which have various potential applications in high capacity signal processing, biosensing, and sub-wavelength imaging. Among various nanolasers, those lasers with cavities surrounded with metals have shown to have superior light emission properties due to the surface plasmon effect providing better field confinement capability and allowing exotic light-matter interaction. In this talk, we report robust ultraviolet ZnO nanolaser by using silver (Ag) [1] and aluminum (Al) [2] to strongly shrink the mode volume. The nanolasers operated at room temperature and even high temperature (353K) shows several distinct features including an extremely small mode volume, large Purcell factor and group index. Comparison of characteristics between Ag-and Al-based will also be made.
  • Thumbnail Image
    Item type:Item,
    Metal for Plasmonic Ultraviolet Laser: Al or Ag?
    (2017-11-01)
    Chou, Yu-Hsun
    ;
    Hong, Kuo-Bin
    ;
    Chung, Yi-Cheng
    ;
    Chang, Chun-Tse
    ;
    Chou, Bo-Tsun
    Surface plasmon polariton (SPP) nanolasers have recently emerged as promising candidates for generating a coherent light source in nanophotonic integration circuits. The properties of SPP nanolasers, such as group velocity, mode area, modulation speed, and threshold performance, can be manipulated using a dispersion relation. In this study, we investigated the characteristics of SPP nanolasers operated near and far from the SP frequency. Our results indicated that SPP nanolaser performance can be significantly influenced by manipulating the dispersion relation.
  • Thumbnail Image
    Item type:Item,
    Circular Dichroism Control of Tungsten Diselenide (WSe2) Atomic Layers with Plasmonic Metamolecules
    (2018-05-09)
    Lin, Hsiang-Ting
    ;
    Chang, Chiao-Yun
    ;
    Cheng, Pi-Ju
    ;
    Li, Ming-Yang
    ;
    Cheng, Chia-Chin
    Controlling circularly polarized (CP) states of light is critical to the development of functional devices for key and emerging applications such as display technology and quantum communication, and the compact circular polarization-tunable photon source is one critical element to realize the applications in the chip-scale integrated system. The atomic layers of transition metal dichalcogenides (TMDCs) exhibit intrinsic CP emissions and are potential chiroptical materials for ultrathin CP photon sources. In this work, we demonstrated CP photon sources of TMDCs with device thicknesses approximately 50 nm. CP photoluminescence from the atomic layers of tungsten diselenide (WSe2) was precisely controlled with chiral metamolecules (MMs), and the optical chirality of WSe2 was enhanced more than 4 times by integrating with the MMs. Both the enhanced and reversed circular dichroisms had been achieved. Through integrations of the novel gain material and plasmonic structure which are both low-dimensional, a compact device capable of efficiently manipulating emissions of CP photon was realized. These ultrathin devices are suitable for important applications such as the optical information technology and chip-scale biosensing.
  • Thumbnail Image
    Item type:Item,
    Ultracompact Pseudowedge Plasmonic Lasers and Laser Arrays
    (2018-02-01)
    Chou, Yu-Hsun
    ;
    Hong, Kuo-Bin
    ;
    Chang, Chun-Tse
    ;
    Chang, Tsu-Chi
    ;
    Huang, Zhen-Ting
    Concentrating light at the deep subwavelength scale by utilizing plasmonic effects has been reported in various optoelectronic devices with intriguing phenomena and functionality. Plasmonic waveguides with a planar structure exhibit a two-dimensional degree of freedom for the surface plasmon; the degree of freedom can be further reduced by utilizing metallic nanostructures or nanoparticles for surface plasmon resonance. Reduction leads to different lightwave confinement capabilities, which can be utilized to construct plasmonic nanolaser cavities. However, most theoretical and experimental research efforts have focused on planar surface plasmon polariton (SPP) nanolasers. In this study, we combined nanometallic structures intersecting with ZnO nanowires and realized the first laser emission based on pseudowedge SPP waveguides. Relative to current plasmonic nanolasers, the pseudowedge plasmonic lasers reported in our study exhibit extremely small mode volumes, high group indices, high spontaneous emission factors, and high Purell factors beneficial for the strong interaction between light and matter. Furthermore, we demonstrated that compact plasmonic laser arrays can be constructed, which could benefit integrated plasmonic circuits.
  • Thumbnail Image
    Item type:Item,
    High-Operation-Temperature Plasmonic Nanolasers on Single-Crystalline Aluminum
    (2016-05)
    Chou, Yu-Hsun
    ;
    Wu, Yen-Mo
    ;
    Hong, Kuo-Bin
    ;
    Chou, Bo-Tsun
    ;
    Shih, Jheng-Hong
    The recent development of plasmonics has overcome the optical diffraction limit and fostered the development of several important components including nanolasers, low-operation-power modulators, and high-speed detectors. In particular, the advent of surface-plasmon-polariton (SPP) nanolasers has enabled the development of coherent emitters approaching the nanoscale. SPP nanolasers widely adopted metal insulator semiconductor structures because the presence of an insulator can prevent large metal loss. However, the insulator is not necessary if permittivity combination of laser structures is properly designed. Here, we experimentally demonstrate a SPP nanolaser with a ZnO nanowire on the as-grown single-crystalline aluminum. The average lasing threshold of this simple structure is 20 MW/cm(2), which is four-times lower than that of structures with additional insulator layers. Furthermore, single-mode laser operation can be sustained at temperatures up to 353 K. Our study represents a major step toward the practical realization of SPP nanolasers.
  • Thumbnail Image
    Item type:Item,
    金屬奈米粒子修飾氧化石墨烯於高分子光電元件之表面電漿效應
    (2015)
    陳方中
    ;
    Chen Fang-Chung
    ;
    國立交通大學光電工程學系（所）
    ｢金屬奈米粒子修飾氧化石墨烯於高分子光電元件之表面電漿效應｣計劃之主要目標在於 運用金屬奈米粒子修飾氧化石墨烯之奈米複合材料於改善高分子光電元件的特性。我們第一年 首先將合成高品質之金奈米粒子修飾氧化石墨烯衍生物，並以各種不同光譜技術進行材料與薄 膜特性之鑑定，之後以這些奈米材料作為高分子太陽能電池的陽極緩衝層，我們將以螢光光譜 等方式研究此新穎材料於元件之表面電漿效應，也將架設暫態光電壓量測技術研究表面電漿對 元件中電荷再結合率的影響。第二年則將使用低能間隙高分子製作元件，用以吸收長波長的太 陽能光子而進一步增加元件的效率，也將改變這些奈米材料的功函數用以製作反式結構，並研 究元件之穩定度與其毀損機制，目標為運用金屬奈米粒子修飾氧化石墨烯製成高效率且高穩定 性之高分子太陽能電池。第三年則將運用前二年的成果改善高分子光增益偵測器之特性，我們 預計本計劃結束前能研發出同時具有高效率及高穩定性之高分子偵測器。
  • Thumbnail Image
    Item type:Item,
    Realization of UV Plasmonic Nanolasers With Extremely Small Mode Volume
    (2015-11-01)
    Chou, Bo-Tsun
    ;
    Chou, Yu-Hsun
    ;
    Chiang, Chih-Kai
    ;
    Wu, Yen-Mo
    ;
    Lin, Tzy-Rong
    It is difficult to operate plasmonic nanolasers on silver films in the ultraviolet regime owing to the bending-back effect of surface plasmon dispersion. In this paper, we report on plasmonic lasers comprised of a ZnO nanowire lying on a single-crystalline silver film with a SiO2 spacer layer. The silver can strongly shrink the mode volume, thereby boosting the Purcell factor. Meanwhile, the SiO2 spacer thickness is optimized to adjust the surface plasmon dispersion curve so that the lasing wavelength can be located at a large dispersion region, thereby achieving a large group index of 55, an ultra-small effective mode volume of 3.5 x 10(-3)lambda(3), and low-threshold of 11 MW/cm(2).
  • Thumbnail Image
    Item type:Item,
    Ultrastrong Mode Confinement in ZnO Surface Plasmon Nanolasers
    (2015-04-01)
    Chou, Yu-Hsun
    ;
    Chou, Bo-Tsun
    ;
    Chiang, Chih-Kai
    ;
    Lai, Ying-Yu
    ;
    Yang, Chun-Ting
    Nano lasers with an ultracompact footprint can provide high-intensity coherent light, which can be potentially applied to high-capacity signal processing, biosensing, and subwavelength imaging. Among various nanolasers, those with cavities surrounded by metals have been shown to have superior light emission properties because of the surface plasmon effect that provides enhanced field confinement capability and enables exotic light matter interaction. In this study, we demonstrated a robust ultraviolet ZnO nanolaser that can operate at room temperature by using silver to dramatically shrink the mode volume. The nanolaser shows several distinct features including an extremely small mode volume, a large Purcell factor, and a slow group velocity, which ensures strong interaction with the exciton in the nanowire.