<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

Author: search.filters.author.Lin, Tzy-RongSubject: search.filters.subject.nanowire

Search Results

Now showing 1 - 7 of 7
  • 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,
    High Q/V-m hybrid photonic-plasmonic crystal nanowire cavity at telecommunication wavelengths
    (2015-01-01)
    Chiang, Chih-Kai
    ;
    Chung, Yi-Cheng
    ;
    Cheng, Pi-Ju
    ;
    Wu, Chien-Wei
    ;
    Chang, Shu-Wei
    We haw analyzed a hybrid photonic-plasmonic crystal nanocavity consisting of a silicon grating nanowire adjacent to a metal surface with a gain gap between. The hybrid plasmonic cavity modes are highly confined in the gap due to the coupling of photonic crystal cavity modes and surface plasmonic gap modes. Using the finite-element method, we numerically solve guided modes of the hybrid plasmonic waveguide at a wavelength of 1.55 jim. The modal characteristics such as wave guide confinement factors and modal losses of the fundamental hybrid plasmonic modes are explored as a function of the groove depth at various gap heights. After that, we show the band structure of the hybrid crystal modes, corresponding to a wide band gap of 17.8 THz. To effectively trap the optical modes, we introduce a single defect into the hybrid crystal. At a deep sub-wavelength defect length as small as 180 nm, the resonant mode exhibits a high quality factor of 566.5 and an ultrasmall mode volume of 0.00186 (ln)3 at the resonance wavelength of 1.55 gm. In comparison to the conventional photonic crystal nanowire cavity in the absence of metal surface, the figure of merit QIVm is enormously enhanced around 15 times. The proposed nanocavities open up the opportunities for various applications with strong light-matter interaction such as nanolasers and bio sensors.
  • 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,
    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,
    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.