scholarly journals Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 114
Author(s):  
Steve Kamau ◽  
Safaa Hassan ◽  
Khadijah Alnasser ◽  
Hualiang Zhang ◽  
Jingbiao Cui ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Near Infrared ◽  
Broadband Absorption ◽  
Au Film ◽  
Fabry Perot ◽  
Absorbing Material ◽  
Multiple Band ◽  
Band Absorption ◽  
Plasmon Polaritons

It is challenging to realize the complete broadband absorption of near-infrared in thin optical devices. In this paper, we studied high light absorption in two devices: a stack of Au-pattern/insulator/Au-film and a stack of Au-pattern/weakly-absorbing-material/Au-film where the Au-pattern was structured in graded photonic super-crystal. We observed multiple-band absorption, including one near 1500 nm, in a stack of Au-pattern/spacer/Au-film. The multiple-band absorption is due to the gap surface plasmon polariton when the spacer thickness is less than 30 nm. Broadband absorption appears in the near-infrared when the insulator spacer is replaced by a weakly absorbing material. E-field intensity was simulated and confirmed the formation of gap surface plasmon polaritons and their coupling with Fabry–Pérot resonance.

Surface Plasmon Polaritons and Inverse Faraday Effect

2012 ◽  
Vol 190 ◽  
pp. 369-372 ◽  
Author(s):  
N.E. Khokhlov ◽  
V.I. Belotelov ◽  
A.N. Kalish ◽  
A.K. Zvezdin
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Surface Plasmon Polariton ◽  
Faraday Effect ◽  
Angle Of Incidence ◽  
Local Magnetization ◽  
Inverse Faraday Effect ◽  
Order Of Magnitude ◽  
Plasmon Polariton ◽  
Plasmon Polaritons

t is shown that the inverse Faraday effect appears in the case of surface plasmon polariton propagation near a metal-paramagnetic interface. The inverse Faraday effect in nanostructured periodically perforated metaldielectric films increases because of the excitation of surface plasmon polaritons. In this case, a stationary magnetic field is amplified by more than an order of magnitude compared to the case of a smooth paramagnetic film. The distribution of an electromagnetic field is sensitive to the wavelength and the angle of incidence of light, which allows one to efficiently control the local magnetization arising due to the inverse Faraday effect.

Modeling of a Surface Plasmon Polariton Interferometer

2003 ◽  
Vol 797 ◽  
Author(s):  
Victor Coello ◽  
Thomas Søndergaard ◽  
Sergey I. Bozhevolnyi
Keyword(s):  
Experimental Data ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Beam Splitter ◽  
Optical Interferometer ◽  
Plasmon Polariton ◽  
Plasmon Polaritons ◽  
Calculated Intensity ◽  
Good Agreement ◽  
Dipolar Model

ABSTRACTWe model the operation of a micro-optical interferometer for surface plasmon polaritons (SPPs) that comprises an SPP beam-splitter formed by equivalent scatterers lined up and equally spaced. The numerical calculations are carried out by using a vector dipolar model for multiple SPP scattering. The SPP beam-splitter is simulated for different angles of the incident SPP beam, radii of the particles, and inter-particle distances in order to find a suitable configuration for realization of a 3dB SPP beam-splitter. The results obtained are in good agreement with experimental data available in the literature. The feasibility of fabricating an interferometer is thereby corroborated and the calculated intensity maps are found rather similar to those experimentally reported.

scholarly journals Anisotropic excitation of surface plasmon polaritons on a metal film by a scattering-type scanning near-field microscope with a non-rotationally-symmetric probe tip

Nanophotonics ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 269-276 ◽  
Author(s):  
Frederik Walla ◽  
Matthias M. Wiecha ◽  
Nicolas Mecklenbeck ◽  
Sabri Beldi ◽  
Fritz Keilmann ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Metal Film ◽  
Near Infrared ◽  
Near Field ◽  
Optical Microscope ◽  
Anisotropic Surface ◽  
Surface Wave Propagation ◽  
Rotationally Symmetric ◽  
Plasmon Polaritons

AbstractWe investigated the excitation of surface plasmon polaritons on gold films with the metallized probe tip of a scattering-type scanning near-field optical microscope (s-SNOM). The emission of the polaritons from the tip, illuminated by near-infrared laser radiation, was found to be anisotropic and not circularly symmetric as expected on the basis of literature data. We furthermore identified an additional excitation channel via light that was reflected off the tip and excited the plasmon polaritons at the edge of the metal film. Our results, while obtained for a non-rotationally-symmetric type of probe tip and thus specific for this situation, indicate that when an s-SNOM is employed for the investigation of plasmonic structures, the unintentional excitation of surface waves and anisotropic surface wave propagation must be considered in order to correctly interpret the signatures of plasmon polariton generation and propagation.

scholarly journals Optical Dispersions of Bloch Surface Waves and Surface Plasmon Polaritons: Towards Advanced Biosensors

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3147 ◽  
Author(s):  
Zigmas Balevicius ◽  
Algirdas Baskys
Keyword(s):  
Surface Waves ◽  
Surface Plasmon ◽  
Total Internal Reflection ◽  
Surface Plasmon Polariton ◽  
Point Of View ◽  
Wavelength Scanning ◽  
Bk7 Glass ◽  
Plasmon Polariton ◽  
Plasmon Polaritons ◽  
Total Internal Reflection Ellipsometry

The total internal reflection ellipsometry (TIRE) method was used for the excitation and study of the sensitivity features of surface plasmon polariton (SPP) and Bloch surface waves (BSWs) resonances. For the BSWs generation distributed Bragg gratings were formed on the tops of the substrates (BK7 glass substrate), which had six bilayers of ~120 nm SiO2 and ~40 nm TiO2 and 40 nm of TiO2 on the top. The SPP sample consisted of the BK7 glass prism and a gold layer (45 nm). Numerical calculations of the optical dispersions and the experimental TIRE data have shown that SPP resonance overtake the BSWs in wavelength scanning by a factor of about 17. However, for the ellipsometric parameters Ψ and Δ in the vicinity of excitations, the BSW sensitivity is comparable with SPP. The obtained resolutions were Δ S P P = 7.14 × 10 − 6 R I U , Ψ S P P = 1.7 × 10 − 5 R I U for the SPP and Δ B S W = 8.7 × 10 − 6 R I U , Ψ B S W = 2.7 × 10 − 5 R I U for the BSW. The capabilities of both surface excitations are discussed from the sensitivity point of view in the design of these advanced biosensors.

scholarly journals A New Electro-Optical Switch Modulator Based on the Surface Plasmon Polaritons of Graphene in Mid-Infrared Band

Sensors ◽  
2018 ◽  
Vol 19 (1) ◽  
pp. 89 ◽  
Author(s):  
Ming Cai ◽  
Shulong Wang ◽  
Bo Gao ◽  
Yindi Wang ◽  
Tao Han ◽  
...  
Keyword(s):  
Energy Loss ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Surface Plasmon Polariton ◽  
Modulation Depth ◽  
Optical Switch ◽  
Dielectric Structure ◽  
Infrared Band ◽  
Mid Infrared ◽  
Plasmon Polaritons

In this paper, a new electro-optical switch modulator based on the surface plasmon polaritons of graphene is proposed. An air–graphene-substrate–dielectric structure is adopted in the modulator. In this structure, the graphene is considered as a film of metal whose thickness tends to be infinitesimal. By changing the external voltage, the boundary conditions can be changed to decide whether the surface plasmon polariton waves can be excited in mid-infrared band. Because of this effect, the structure can be used as an electro–optical switch modulator, whose modulation depth is about 100% in theory. Finally, the 3 dB bandwidth (~34 GHz) and the energy loss (36.47 fJ/bit) of the electro–optical switch modulator are given, whose low energy loss is very suitable for engineering applications.

scholarly journals Mapping the near-field spin angular momenta in the structured surface plasmon polariton field

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13674-13679
Author(s):  
C. C. Li ◽  
P. Shi ◽  
L. P. Du ◽  
X. C. Yuan
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Imaging Technique ◽  
Near Field ◽  
Three Dimensional ◽  
Experimental Result ◽  
Spin Component ◽  
Angular Momenta ◽  
Scanning Imaging ◽  
Plasmon Polaritons

An optical spin-resolved scanning imaging technique was proposed by which the normal to the interface spin component of surface plasmon polaritons can be mapped and the three-dimensional spin vector can be reconstructed with the experimental result.

Gapped Surface Plasmon Polariton Waveguide Device Based on a Liquid Crystal

2015 ◽  
Vol 15 (10) ◽  
pp. 7711-7716 ◽  
Author(s):  
Dong Hun Lee ◽  
Myung-Hyun Lee
Keyword(s):  
Liquid Crystal ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Twist Angle ◽  
Coupling Loss ◽  
Metal Insulator ◽  
Input Surface ◽  
Device Applications ◽  
Plasmon Polariton ◽  
Plasmon Polaritons

We propose a gapped surface plasmon polariton waveguide (G-SPPW) device based on a liquid crystal (LC) at a wavelength of 1.55 μm. The G-SPPW device is composed of an input 2.0-μm-wide and 5.0-μm-long insulator-metal-insulator waveguide (IMI-W), an 8-μm-long gap, and an output 2.0-μm-wide and 25.0-μm-long IMI-W. The LC is used for the gap and the 5.15-μm-thick upper and lower dielectric layers. The input surface plasmon polaritons (SPPs) propagate and jump over the gap in the G-SPPW with a coupling loss of less than ∼0.68 dB. The propagation and coupling losses of the 38-μm-long G-SPPW device are varied in the range of ∼0.5268 dB to ∼2.6716 dB and ∼0.1446 dB to ∼0.6784 dB, respectively, with LC tilt angles (1, 2) = 0° ∼ 90° at a fixed 90° twist angle. The normalized transmission of the G-SPPW device is also varied in the range from −3.351 dB to −0.6714 dB with 1, 2 = 0° ∼ 90° at a fixed 90° twist angle. The output SPP characteristics of the G-SPPW device can be properly controlled by the orientation of the LC molecules. The proposed G-SPPW device shows potential for new active plasmonic device applications.

scholarly journals Generation of Bessel Surface Plasmon Polaritons in a Finite-Thickness Metal Film

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
S. N. Kurilkina ◽  
V. N. Belyi ◽  
N. S. Kazak
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Metal Film ◽  
Surface Plasmon Polariton ◽  
Metal Layer ◽  
Near Field ◽  
Finite Thickness ◽  
Experimental Realization ◽  
Analytical Expressions ◽  
Plasmon Polaritons

A theory of generation of low- and high-index Bessel surface plasmon polaritons and their superposition in a metal film of a finite thickness is developed. Correct analytical expressions are obtained for the field of two families of Bessel surface plasmon polariton modes formed inside and outside the metal layer. The intensity distribution near the boundary of the layer has been calculated and analyzed. A scheme for the experimental realization of a superposition of Bessel surface plasmon polaritons is suggested. Our study demonstrates that it is feasible to use the superposition of Bessel surface plasmon polaritons as a virtual tip for near-field optical microscopy with a nanoscale resolution.

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