Laboratory experiments for exploring the surface plasmon resonance

Pluchery, Olivier; Vayron, Romain; Van, Kha-Man

doi:10.1088/0143-0807/32/2/028

Cited by 43 publications

(33 citation statements)

References 13 publications

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“…One approach to assess the dispersion relation of the SPP for the Ag x Au 1− x alloys is by measuring the reflectivity of the films. Here, we use the Kretschmann configuration to provide sufficient momentum to excite SPPs . In our setup, the laser passes through a fused silica prism, which is attached to the glass substrate using an index matching liquid.…”

mentioning

confidence: 99%

“…The position and intensity of the band, as well as the critical angle (corresponding to the max reflection), match well between the measurements and calculations. To optimize for the largest attenuation of reflection power, the films are fabricated with a 50 nm nominal thickness as per critical coupling when using the Kretschmann configuration (see Table S1 of the Supporting Information for the experimentally determined thicknesses) …”

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confidence: 99%

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Band Structure Engineering by Alloying for Photonics

Gong

Kaplan

Benson

et al. 2018

Advanced Optical Materials

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at deep sub-wavelengths, [2] leading to a variety of applications including nanolasers, [3] sensors, [4] bioimaging, [5] surfaceenhanced Raman spectroscopy, [6,7] color displays, [8] and others. [9][10][11][12] To improve the performance of today's photonic systems, researchers have extensively investigated the fundamental relation between the wave vector and energy of an SPP wave-named dispersion relation. This quantity describes the propagation of light within a material (i.e., medium), extremely relevant for the abovementioned optical devices. Therefore, understanding the dispersion relation can allow the design of optical materials with superior response, ranging from 2D van der Waals to oxides and metals. Concerning 2D materials, it can uncover the origin of tunable polaritons in hyperbolic metamaterials based on graphene and hexagonal boron nitride (h-BN), which is due to the hybridization of SPP and surface phonon polaritons. [13] As another example, by utilizing the band-edge mode of the dispersion relation in metallic nanocavities, [3] lasing with a 200 times enhancement of the spontaneous emission rate of the dye has been reached. [14] As a class of emerging photonic materials, noble metal alloys with permittivity and localized surface plasmon resonances not achievable by pure metals [9,15,16] have been proposed as alternative candidates for plasmonics [12,[17][18][19][20] because of their tunable dielectric functions, which make it possible to engineer the alloy composition to attain optical properties that will meet desired resonances. In turn, this tunability could be used to Surface plasmon polaritons (SPPs) enable the deep subwavelength confinement of an electromagnetic field, which can be used in optical devices ranging from sensors to nanoscale lasers. However, the limited number of metals that satisfy the required boundary conditions for SPP propagation in a metal/dielectric interface severely limits its occurrence in the visible range of the electromagnetic spectrum. We introduce the strategy of engineering the band structure of metallic materials by alloying. We experimentally and theoretically establish the control of the dispersion relation in Ag-Au alloys by varying the film chemical composition. Through X-ray photoelectron spectroscopy (XPS) measurements and partial density-of-states calculations we deconvolute the d band contribution of the density-of-states from the valence band spectrum, showing that the shift in energy of the d band follows the surface plasmon resonance change of the alloy. Our density functional theory calculations of the alloys band structure predict the same variation of the threshold of the interband transition, which is in very good agreement with our optical and XPS experiments. By elucidating the correlation between the optical behavior and band structure of alloys, we anticipate the fine control of the optical properties of metallic materials beyond pure metals. Band Structure EngineeringThe ORCID identification number(s) for the author(s) of this article can b...

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Band Structure Engineering by Alloying for Photonics

Gong

Kaplan

Benson

et al. 2018

Advanced Optical Materials

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“…30°as plotted in the graph of Fig. 1c [7]. From this plot, it is easy to understand that if the angle is set at 30°, and if a white light beam from a halogen lamp is used instead of a monochromatic laser beam, the red component of light will not be reflected.…”

Section: Experiments 5 Surface Plasmon Resonance and The Colour Of Goldmentioning

confidence: 99%

“…This is a typical effect arising from the confinement of an optical wave into a nanometer-thin gold film. A setup that exhibits this effect is described in details in a publication [7] and is available from a small company as a lab work for master students [8].…”

Section: Experiments 5 Surface Plasmon Resonance and The Colour Of Goldmentioning

confidence: 99%

Demonstrative experiments about gold nanoparticles and nanofilms: an introduction to nanoscience

2013

Self Cite

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An important task of the scientific community is to provide non-specialized audience with explanations about what is nanoscience. Such explanations can be given during public conferences, seminars in high schools or lab work organized with teachers. And very often, the use of an experimental illustration greatly helps to raise the interest and the curiosity of the public. The present article will describe how the authors have used five simple and visual experiments in chemistry and physics to progressively introduce different audiences into the fascination of nanoscience. One experiment is the synthesis of gold nanoparticles with the Turkevich method and shows the progressive appearance of the rubyred colour of the nanometric gold particles. The second and third experiments describe the way for modulating their colour and how to include them into a polymer and form a ruby-red coloured plastic film. The fourth experiment shows that starting from these nanoparticles, it is possible to turn them back into a yellow golden film. The last experiment is based on the optical properties of ultra-thin gold films. Using the plasmon resonance, it is possible to demonstrate that gold change colours from yellow to orange and green when a white light beam is shone on the gold interface. These visual experiments cannot be fully interpreted in front of a large audience but serve for rising curiosity.

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“…7(b)] using ImageJ software 19 used by several groups for this purpose. 20,21 The output intensity of the experimental results is set to 0 dB similar to the simulation results. With the short segment, the output intensities from the experiments and simulations for 635 nm wavelength are À10.5 and À13.7 dB, respectively, and for 658 nm wavelength are À5.3 and À8.5 dB, respectively.…”

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Self-imaging confirmed in plasmonic channel waveguides at visible wavelengths

Okamoto

Kusaka

Yamaguchi

et al. 2014

Applied Physics Letters

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We experimentally confirm self-imaging induced by multi-mode interference of plasmon polaritons in a channel waveguide at visible wavelengths. A designed plasmonic channel waveguide, fabricated as three structural segments at two different channel depths, operates as a single- and multi-mode waveguide. Illuminated by incident light of wavelength 635 nm, the channel plasmon polaritons propagate towards the output port if the length of the multi-mode waveguide is equivalent to twice the beat length for multi-mode interference. If the length of the multi-mode waveguide is equivalent to the beat length, only a few of these plasmon polaritons propagate to the output port as most of them are reflected at the far end of the multi-mode segment of the waveguide. Experimental results enable a clear characterization of self-imaging induced by the multi-mode interference of channel plasmon polaritons.

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Laboratory experiments for exploring the surface plasmon resonance

Cited by 43 publications

References 13 publications

Band Structure Engineering by Alloying for Photonics

Band Structure Engineering by Alloying for Photonics

Demonstrative experiments about gold nanoparticles and nanofilms: an introduction to nanoscience

Self-imaging confirmed in plasmonic channel waveguides at visible wavelengths

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