Numerical design and scattering losses of a one-dimensional metallo–dielectric multilayer with broadband coupling of propagating waves to plasmon modes in the visible range

2011 ◽  
Vol 28 (7) ◽  
pp. 1778 ◽  
Author(s):  
Emily Ray ◽  
Rene Lopez
Keyword(s):  
Visible Range ◽  
One Dimensional ◽  
Propagating Waves ◽  
Numerical Design ◽  
Scattering Losses ◽  
Plasmon Modes ◽  
Dielectric Multilayer

scholarly journals Microscopic Study on Excitation and Emission Enhancement by the Plasmon Mode on a Plasmonic Chip

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6415
Author(s):  
Hinako Chida ◽  
Keiko Tawa
Keyword(s):  
Enhancement Factor ◽  
Plasmon Mode ◽  
Visible Range ◽  
Green Fluorescence ◽  
Reflection And Transmission ◽  
One Dimensional ◽  
Emission Enhancement ◽  
Enhancement Factors ◽  
2D Pattern ◽  
Plasmon Modes

Excitation and emission enhancement by using the plasmon mode formed on a plasmonic chip was studied with a microscope and micro-spectroscope. Surface plasmon resonance wavelengths were observed on one-dimensional (1D) and two-dimensional (2D) plasmonic chips by measuring reflection and transmission spectra, and they were assigned to the plasmon modes predicted by the theoretical resonance wavelengths. The excitation and emission enhancements were evaluated using the fluorescence intensity of yellow–green fluorescence particles. The 2D grating had plasmon modes of kgx45(2) (diagonal direction with m = 2) in addition to the fundamental mode of kgx(1) (direction of a square one side) in the visible range. In epifluorescence detection, the excitation enhancement factors of kgx(2) on the 1D and 2D chips were found to be 1.3–1.4, and the emission enhancement factor of kgx45(2) on the 2D chip was 1.5–1.8, although the emission enhancement was not found on the 1D chip. Moreover, enhancement factors for the other fluorophores were also studied. The emission enhancement factor of kgx(1) was shown to depend on the fluorescence quantum yield. The emission enhancement of 2D was 1.3-fold larger than that of 1D considering all azimuth components, and the 2D pattern was shown to be advantageous for bright fluorescence microscopic observation.

Numerical Design of Matching Structures for One-Dimensional Finite Superlattices

2013 ◽  
Vol E96.C (11) ◽  
pp. 1440-1443 ◽  
Author(s):  
Hirofumi SANADA ◽  
Megumi TAKEZAWA ◽  
Hiroki MATSUZAKI
Keyword(s):  
One Dimensional ◽  
Numerical Design

scholarly journals Numerical Modeling of the Interaction of Solitary Waves and Submerged Breakwaters with Sharp Vertical Edges Using One-Dimensional Beji & Nadaoka Extended Boussinesq Equations

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammad H. Jabbari ◽  
Parviz Ghadimi ◽  
Ali Masoudi ◽  
Mohammad R. Baradaran
Keyword(s):  
Solitary Waves ◽  
Numerical Study ◽  
Time Integration ◽  
Boussinesq Equations ◽  
Linear Interpolation ◽  
Reflected Waves ◽  
One Dimensional ◽  
Propagating Waves ◽  
Linear Elements ◽  
Predictor Corrector

Using one-dimensional Beji & Nadaoka extended Boussinesq equation, a numerical study of solitary waves over submerged breakwaters has been conducted. Two different obstacles of rectangular as well as circular geometries over the seabed inside a channel have been considered in view of solitary waves passing by. Since these bars possess sharp vertical edges, they cannot directly be modeled by Boussinesq equations. Thus, sharply sloped lines over a short span have replaced the vertical sides, and the interactions of waves including reflection, transmission, and dispersion over the seabed with circular and rectangular shapes during the propagation have been investigated. In this numerical simulation, finite element scheme has been used for spatial discretization. Linear elements along with linear interpolation functions have been utilized for velocity components and the water surface elevation. For time integration, a fourth-order Adams-Bashforth-Moulton predictor-corrector method has been applied. Results indicate that neglecting the vertical edges and ignoring the vortex shedding would have minimal effect on the propagating waves and reflected waves with weak nonlinearity.

Solitary-wave solutions of nonlinear problems

1990 ◽  
Vol 331 (1617) ◽  
pp. 195-244 ◽  
Keyword(s):  
Fixed Point ◽  
Solitary Waves ◽  
Fixed Point Index ◽  
Fixed Point Theorems ◽  
Nonlinear Problems ◽  
One Dimensional ◽  
Propagating Waves ◽  
Model Equations ◽  
Permanent Form ◽  
General Method

A general method is presented for the exact treatment of analytical problems that have solutions representing solitary waves. The theoretical framework of the method is developed in abstract first, providing a range of fixed-point theorems and other useful resources. It is largely based on topological concepts, in particular the fixed-point index for compact mappings, and uses a version of positive-operator theory referred to Frechet spaces. Then three exemplary problems are treated in which steadily propagating waves of permanent form are known to be represented. The first covers a class of one-dimensional model equations that generalizes the classic Korteweg—de Vries equation. The second concerns two-dimensional wave motions in an incompressible but density-stratified heavy fluid. The third problem describes solitary waves on water in a uniform canal.

scholarly journals Nonlinear pulse propagation in one-dimensional metal-dielectric multilayer stacks: Ultrawide bandwidth optical limiting

2006 ◽  
Vol 73 (1) ◽  
Author(s):  
Michael Scalora ◽  
Nadia Mattiucci ◽  
Giuseppe D’Aguanno ◽  
MariaCristina Larciprete ◽  
Mark J. Bloemer
Keyword(s):  
Pulse Propagation ◽  
Optical Limiting ◽  
One Dimensional ◽  
Nonlinear Pulse Propagation ◽  
Multilayer Stacks ◽  
Dielectric Multilayer

scholarly journals Excitation of waves at 2 <i>ω<sub>p,e</sub></i> and back propagating waves at <i>ω<sub>p,e</sub></i>: a parametric study

2003 ◽  
Vol 10 (4/5) ◽  
pp. 345-349 ◽  
Author(s):  
P. Trávnίček ◽  
P. Hellinger ◽  
D. Schriver ◽  
M. G. G. T Taylor
Keyword(s):  
Parametric Study ◽  
Numerical Experiments ◽  
Angular Frequency ◽  
Mass Ratio ◽  
Electrostatic Waves ◽  
One Dimensional ◽  
Nonlinear Growth ◽  
Propagating Waves ◽  
Theoretical Predictions ◽  
Beam Parameters

Abstract. We present a parametric study of electrostatic waves generated with angular frequencies 2 wp,e and - wp,e by an electron beam using a one-dimensional Vlasov code. We consider a background plasma consisting of three components: two electron populations (a background and a beam) and a proton population (with a mass ratio mp /me = 400 and temperatures Tp = Te = T ). We investigate the influence of different beam parameters on the nonlinear growth rate of waves with angular frequency 2wp,e and compare the results of the numerical experiments to theoretical predictions. We also examine the presence and excitation of back propagating waves with angular frequency wp,e. A discussion on the possible generating mechanisms of the different modes observed in these simulations is also presented.

Statistical Properties of Envelope Field for Gaussian Sea Surface

2002 ◽  
Author(s):  
Krzysztof Podgo´rski ◽  
Igor Rychlik
Keyword(s):  
Statistical Properties ◽  
Sea Surface ◽  
Two Dimensional ◽  
Wave Groups ◽  
One Dimensional ◽  
Sampling Distributions ◽  
Marine Application ◽  
Propagating Waves ◽  
Definition Of

The envelope process is a useful analytical tool which is often used to study wave groups. Most research on statistical properties of the envelope, and thus of wave groups, was focused on one dimensional records. However for the marine application, an appropriate concept should be two dimensional in space and variable in time. Although a generalization to higher dimensions was introduced by Adler (1978), little work was done to investigate its features. Since the envelope is not defined uniquely and its properties depend on a chosen version, we discuss the definition of the envelope field for a two dimensional random field evolving in time which serves as a model of irregular sea surface. Assuming Gaussian distribution of this field we derive sampling properties of the height of the envelope field as well as of its velocity. The latter is important as the velocity of the envelope is related to the rate at which energy is transported by propagating waves. We also study how statistical distributions of group waves differ from the corresponding ones for individual waves and how a choice of a version of the envelope affects its sampling distributions. Analyzing the latter problem helps in determination of the version which is appropriate in an application in hand.

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