Propagation length of surface plasmons in a metal film with roughness

2009 ◽  
Vol 48 (30) ◽  
pp. 5683 ◽  
Author(s):  
Andrei Kolomenski ◽  
Alexandre Kolomenskii ◽  
John Noel ◽  
Siying Peng ◽  
Hans Schuessler
Keyword(s):  
Surface Plasmons ◽  
Metal Film ◽  
Propagation Length

FOCUSING CONTROL BASED ON SPPs-SCATTERING MODULATION

2010 ◽  
Vol 19 (04) ◽  
pp. 535-541 ◽  
Author(s):  
FENGHUAN HAO ◽  
RUI WANG ◽  
JIA WANG
Keyword(s):  
Metal Film ◽  
Design Method ◽  
Control Device ◽  
Constructive Interference ◽  
Propagation Length ◽  
Exit Surface ◽  
Different Types ◽  
Focus Spot ◽  
Simulation Results

We demonstrate a design method of focusing-control device, which consists of single metallic nano-slit surrounded with the grooves at the metal exit surface. According to the principle of the constructive interference, the grooves are positioned to scatter the SPPs to the radiation lights with desired phases. The role of SPPs in the focusing control is investigated, by applying the design method in the four different types of metal film. The simulation results indicate that the focusing effects are dependant on the types of metal film, the metal film which supports the SPPs with a long propagation length can form an apparent focus spot, and the reason is discussed.

scholarly journals A New Perspective on Plasmonics: Confinement and Propagation Length of Surface Plasmons for Different Materials and Geometries

2015 ◽  
Vol 4 (1) ◽  
pp. 177-184 ◽  
Author(s):  
Babak Dastmalchi ◽  
Philippe Tassin ◽  
Thomas Koschny ◽  
Costas M. Soukoulis
Keyword(s):  
Surface Plasmons ◽  
Propagation Length ◽  
New Perspective

scholarly journals Кулоновские плазмон-экситоны в планарных наноструктурах металл-полупроводник

2021 ◽  
Vol 63 (4) ◽  
pp. 527
Author(s):  
В.А. Кособукин
Keyword(s):  
Quantum Well ◽  
Surface Plasmons ◽  
Metal Film ◽  
Equations Of Motion ◽  
Normal Modes ◽  
Harmonic Oscillators ◽  
Two Dimensional ◽  
Coupled Harmonic Oscillators ◽  
Dipole Force ◽  
Two Peaks

A theory of Coulomb (non-radiative) plasmons-excitons in a semiconductor with adjacent quantum well and ultrathin metal film is presented. The equations of motion are formulated for the polarization waves of surface plasmons and quasi-two-dimensional excitons with taking account of Coulomb interaction between them. Within a model of coupled harmonic oscillators, solved are the problems of Coulomb plasmon, exciton and plasmon-exciton excitations in the presence of an external dipole force. The coupling contant is calculated for plasmon-excitons, their optical spectra are investigated, and the relative contributions of plasmons and excitons to the normal modes are found. It is concluded that near the resonance between plasmon and exciton the spectrum of plasmon-exciton excitations consists of two peaks whose behavior in passing through the resonance shows the signs of anti-crossing effect (repulsion of frequencies).

scholarly journals Effect of metal film thickness on Tamm plasmon-coupled emission

2014 ◽  
Vol 16 (46) ◽  
pp. 25523-25530 ◽  
Author(s):  
Yikai Chen ◽  
Douguo Zhang ◽  
Liangfu Zhu ◽  
Qiang Fu ◽  
Ruxue Wang ◽  
...  
Keyword(s):  
Film Thickness ◽  
Surface Plasmons ◽  
Metal Film ◽  
Ag Film ◽  
Angle Dependent Reflectivity

We calculated the angle-dependent reflectivity of a Tamm structure, which demonstrates the effect of Ag film thickness on the excitation of surface plasmons and Tamm plasmons.

scholarly journals High-Performance Transmission of Surface Plasmons in Graphene-Covered Nanowire Pairs with Substrate

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1594 ◽  
Author(s):  
Da Teng ◽  
Kai Wang ◽  
Qiongsha Huan ◽  
Yongzhe Zhao ◽  
Yanan Tang
Keyword(s):  
Surface Plasmons ◽  
High Performance ◽  
Infrared Range ◽  
Support Surface ◽  
Propagation Length ◽  
Promising Alternative ◽  
Silica Substrate ◽  
Nanophotonic Devices ◽  
Substrate Layer ◽  
Potential Applications

Graphene was recently proposed as a promising alternative to support surface plasmons with superior performances in the mid-infrared range. Here, we theoretically show that high-performance and low-loss transmission of graphene plasmons can be achieved by adding a silica substrate to the graphene-covered nanowire pairs. The effect of the substrate layer on mode properties has been intensively investigated by using the finite element method. Furthermore, the results show that inserting a low index material layer between the nanowire and substrate could compensate for the loss accompanied by the substrate, thus the mode properties could be adjusted to fulfill better performance. A reasonable propagation length of 15 μm and an ultra-small normalized mode area about ~10−4 could be obtained at 30 THz. The introduction of the substrate layer is crucial for practical fabrication, which provides additional freedom to tune the mode properties. The graphene-covered nanowire pairs with an extra substrate may inspire potential applications in tunable integrated nanophotonic devices.

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