We investigate surface plasmon modes supported by flat-top silver nano-ridges. We calculate the mode electromagnetic field distribution, the dispersion curve, the travel range, and the figure-of-merit of the nano-ridge mode. We find that the nano-ridge surface plasmon modes are quasi-TEM modes with longitudinal field components three orders of magnitude smaller than the transverse field components. The quasi-TEM nature of mode profiles reveals that the propagation of free electron oscillations on the top of the nano-ridge contributes mainly to the tightly confined ridge mode. We also find that as the width of the nano-ridge decreases, the ridge mode becomes more tightly confined on the ridge top. As the width of the nano-ridge increases, the nano-ridge mode approaches two decoupled right-angle wedge plasmon modes. Show
Published on December 4, 2011 Download a PDF of the paper titled Mode Properties of Flat-top Silver Nano-ridge Surface Plasmon Waveguides, by Zeyu Pan and 4 other authors Download PDF Abstract:We investigate surface plasmon modes supported by flat-top silver nano-ridges. We calculate the mode electromagnetic field distribution, the dispersion curve, the travel range, and the figure-of-merit of the nano-ridge mode. We find that the nano-ridge surface plasmon modes are quasi-TEM modes with longitudinal field components three orders of magnitude smaller than the transverse field components. The quasi-TEM nature of mode profiles reveals that the propagation of free electron oscillations on the top of the nano-ridge contributes mainly to the tightly confined ridge mode. We also find that as the width of the nano-ridge decreases, the ridge mode becomes more tightly confined on the ridge top. As the width of the nano-ridge increases, the nano-ridge mode approaches two decoupled right-angle wedge plasmon modes. Submission historyFrom: Zeyu Pan [view email] [v1] Sun, 4 Dec 2011 17:29:38 UTC (8,055 KB) Full-text links: Access Paper:Download a PDF of the paper titled Mode Properties of Flat-top Silver Nano-ridge Surface Plasmon Waveguides, by Zeyu Pan and 4 other authors
Current browse context: physics.optics export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation ToolsBibliographic Explorer Toggle Code, Data, Media Code, Data and Media Associated with this ArticleDemos DemosRelated Papers Recommenders and Search ToolsAbout arXivLabs arXivLabs: experimental projects with community collaboratorsarXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. 1Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, Alabama 35899, USA 2Department of Physics, University of Massachusetts at Boston, Boston, Massachusetts 02125, USA 3Solid State Scientific Corporation, Hollis, New Hampshire 03049, USA *Corresponding author: [email protected] Not Accessible Your library or personal account may give you access AbstractPropagating two-dimensional plasmon modes can be guided along nanoscale flat-top metal ridges. Mode field distributions, dispersion curves, travel ranges, and figures-of-merit of various flat-top silver nanoridge plasmon waveguide modes have been calculated and are presented in this paper. It has been found that flat-top metal nanoridge plasmon modes are quasi-transverse electromagnetic (TEM) modes with longitudinal electromagnetic field components 3 orders of magnitude smaller than the transverse field components. The quasi-TEM nature of the plasmon modes reveals that the propagation of the free electron oscillation on the top of the nanoridge contributes mainly to the tightly confined ridge mode. It is also found that as the width of the nanoridge decreases, the ridge plasmon mode becomes more tightly confined on the ridge top. As the nanoridge width increases, the plasmon mode approaches two decoupled right-angle wedge plasmon modes. ©2012 Optical Society of America Full Article | PDF Article More Like This Cited ByYou do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution. What are the properties of surface plasmons?Surface plasmons offer useful properties such as field localization and enhancement, high surface sensitivity, and sub-wavelength confinement, which have led surface plasmons into applications in, e.g., nanophotonics, biosensing, and integrated optical circuits. What is surface plasmon resonance in nanoparticles?Surface plasmon resonance (SPR) is the manifestation of a resonance effect due to the interaction of conduction electrons of metal nanoparticles with incident photons. The interaction relies on the size and shape of the metal nanoparticles and on the nature and composition of the dispersion medium. What is the electromagnetic theory of surface plasmons?The term "surface plasmon polariton" explains that the wave involves both charge motion in the metal ("surface plasmon") and electromagnetic waves in the air or dielectric ("polariton"). They are a type of surface wave, guided along the interface in much the same way that light can be guided by an optical fiber. What is surface plasmon resonance caused by?Surface plasmon resonance occurs when a photon of incident light hits a metal surface (typically a gold surface). At a certain angle of incidence, a portion of the light energy couples through the metal coating with the electrons in the metal surface layer, which then move due to excitation. |
