A simple method for generating unidirectional surface plasmon polariton beams with arbitrary profiles

You, Oubo; Bai, Benfeng; Wu, Xiaoyu; Zhu, Zhihong; Wang, Qixia

doi:10.1364/ol.40.005486

Cited by 14 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9,[18][19][20] and the generation of unidirection SPP beams was reported in Ref. [21]. On the theoretical side, the problem of scattering of SPP in metals by one-dimensional defects, such as wires or grooves, has been studied in Refs.…”

Section: Introductionmentioning

confidence: 99%

Scattering of graphene plasmons at abrupt interfaces: An analytic and numeric study

et al. 2018

View full text Add to dashboard Cite

We discuss the scattering of graphene surface plasmon polaritons (SPPs) at an interface between two semiinfinite graphene sheets with different doping levels and/or different underlying dielectric substrates. We take into account retardation effects and the emission of free radiation in the scattering process. We derive approximate analytic expressions for the reflection and the transmission coefficients of the SPPs as well as the same quantities for the emitted free radiation. We show that the scattering problem can be recast as a Fredholm equation of the second kind. Such an equation can then be solved by a series expansion, with the first term of the series corresponding to our approximated analytical solution for the reflection and transmission amplitudes. We have found that almost no free radiation is emitted in the scattering process and that under typical experimental conditions the back-scattered SPP transports very little energy. This paper provides a theoretical description of graphene plasmon scattering at an interface between distinct Fermi levels, which could be relevant for the realization of plasmonic circuitry elements such as plasmonic lenses or reflectors, and for controlling plasmon propagation by modulating the potential landscape of graphene.

show abstract

Section: Introductionmentioning

confidence: 99%

Scattering of graphene plasmons at abrupt interfaces: An analytic and numeric study

et al. 2018

View full text Add to dashboard Cite

show abstract

“…For a point source there is no issue of wavenumber mismatch, but also no control of the directionality of the launched SPP. Excitation of SPP with a single wavenumber and direction is vital for many applications [16,[26][27][28][29][30][31][32]. Our proposal applies a train of π-pulses to write a wave vector into the phase of the spin wave excitation of the emitter ensemble, which is phase matched with the SPP with the desired directionality (determined by the wave vectors of the π-pulses).…”

mentioning

confidence: 99%

Surface Plasmon Launching by Polariton Superradiance

Zhang

Mølmer

2019

ACS Photonics

View full text Add to dashboard Cite

The condition of phase matching prohibits the transfer of excitation from free-space photons to surface plasmon polaritons (SPP). We propose and analyze a scheme that excites an ensemble of emitters in a collective state, which is phase matched with the SPP by the optical pulses used for its preparation. By a collective enhancement the ensemble, hence, emits an SPP in a well defined direction. We demonstrate the scheme by analyzing the launching of near-infrared graphene SPP. Our theory incorporates the dispersive and dissipative properties of the plasmon modes to evaluate the non-Markovian emission by the ensembles and will also be applicable for other types of surface polaritons.

show abstract

“…In the recent years, a holographic approach for excitation of various complex-configuration plasmonic beams by laser beams incident from air [15][16][17][18] or by simple SPPs [19][20][21] is being actively developed. Holograms for excitation of plasmonic Airy [15,16,18,22], plasmonic Hermite-Gauss [15,18,23], plasmonic Bessel [18] beams on a flat metal surface and other plasmonic beams with rather complex field distributions [20] are developed and fabricated. One class of plasmonic holograms proposed in literature includes holograms in a form of metal surface modulation determined by interference of an exciting wave with a plasmonic beam being excited [15,18,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…One class of plasmonic holograms proposed in literature includes holograms in a form of metal surface modulation determined by interference of an exciting wave with a plasmonic beam being excited [15,18,[24][25][26]. Holograms of another class are metasurfaces composed of optical nanoantennas whose characteristics and arrangement are customized to create a required amplitude-phase distribution of the scattered field [16,17,20,23]. However, application of holography for efficient (in terms of power) excitation of plasmonic surface waves in metal-dielectric structures and modes of plasmonic waveguides is still to be analyzed.…”

Section: Introductionmentioning

confidence: 99%

Holograms for power-efficient excitation of optical surface waves

Ignatov

Merzlikin

2018

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

A method for effective excitation of optical surface waves based on holography principles has been proposed. For a particular example of excitation of a plasmonic wave in a dielectric layer on metal the efficiency of proposed volume holograms in the dielectric layer has been analyzed in comparison with optimized periodic gratings in the dielectric layer. Conditions when the holograms are considerably more efficient than the gratings have been found out. In addition, holograms recorded in two iterations have been proposed and studied. Such holograms are substantially more efficient than the optimized periodic gratings for all incidence angles of an exciting Gaussian beam. The proposed method is universal: it can be extended for efficient excitation of different types of optical surface waves and optical waveguide modes.

show abstract

A simple method for generating unidirectional surface plasmon polariton beams with arbitrary profiles

Cited by 14 publications

References 23 publications

Scattering of graphene plasmons at abrupt interfaces: An analytic and numeric study

Scattering of graphene plasmons at abrupt interfaces: An analytic and numeric study

Surface Plasmon Launching by Polariton Superradiance

Holograms for power-efficient excitation of optical surface waves

Contact Info

Product

Resources

About