Optical characterisation of gold using surface plasmon-polaritons

Innes, R.A.; Sambles, J. R.

doi:10.1088/0305-4608/17/1/031

Cited by 118 publications

(66 citation statements)

References 19 publications

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“…The refractive index of the substrate was taken to be 1.4711 33 and the refractive index of the gold at 633 nm was taken to be 0.197 + j3.446. 34 The model first calculates the mode field distribution of the input waveguide, determines the mode field distributions, velocities and losses of all the guided modes in the gold-coated section, and calculates the distribution of power from the input waveguide to each of these modes. It then allows these modes to propagate over the length of the goldcoated section and combines them, taking their relative phases and attenuations into account, in the output waveguide (which has the same field distribution as the input waveguide).…”

Section: Resultsmentioning

confidence: 99%

Waveguide surface plasmon resonance studies of surface reactions on gold electrodes

et al. 2002

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We describe the fabrication and characterisation of gold-coated graded index channel waveguide sensors designed for simultaneous electrochemical and surface plasmon resonance studies. The active sensing electrode area is a thin gold film between 0.5 and 5 mm in length and 200 mm wide deposited on top of a 3 mm wide waveguide which forms one arm of a Y-junction while the other arm of the Y-junction serves as a reference. Using these devices we have measured simultaneously the changes in transmittance through the device whilst carrying out cyclic voltammetry in either sulfuric or perchloric acid solution or during the deposition of an UPD layer of copper at the gold surface. In all cases we obtain stable and reproducible results which demonstrate the very high sensitivity of the devices to sub-monolayer changes occurring at the gold electrode surface. The response of these integrated optoelectrochemical devices is discussed in terms of a numerical model for the propagation of light within the waveguide structure.

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Section: Resultsmentioning

confidence: 99%

Waveguide surface plasmon resonance studies of surface reactions on gold electrodes

et al. 2002

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“…Their mixed character of electromagnetic waves and surface electron oscillations makes them suitable for sub-wavelength focusing, enabling nano-optical circuits, slow light, and extraordinary transmission. The Kretschmann geometry is widely used in the context of gas detection and biosensing [4][5][6] or to measure the complex dielectric function of the metal itself [7]. These applications rely on the sensitivity of the Surface Plasmon Resonance (SPR) to the refractive indices of the metal and the dielectric forming the interface.…”

Section: Introductionmentioning

confidence: 99%

“…SPP dispersion curves have been obtained using electron-energy loss spectroscopy measurements [11]. Using optical means, the SPR at a particular wavelength can be observed in the Kretschmann geometry, by measuring the reflected intensity of a monochromatic light source as a function of angle of incidence [1,7,12]. In a similar configuration, a measurement of the whole dispersion curve can be obtained by sequentially scanning the illumination wavelength [13].…”

Section: Introductionmentioning

confidence: 99%

Direct imaging of surface plasmon polariton dispersion in gold and silver thin films

et al. 2016

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We image the dispersion of surface plasmon polaritons in gold and silver thin films of 30 nm and 50 nm thickness, using angle-resolved white light spectroscopy in the Kretschmann geometry. Calibrated dispersion curves are obtained over a wavelength range spanning from 550 nm to 900 nm. We obtain good qualitative agreement with calculated dispersion curves that take into account the thickness of the thin film.

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“…Its biocompatibility helped in developing various techniques where surface plasmon-polaritons excited in gold films were used for enhancing Raman spectra [35] or measuring the growth of thin organic films [36]. But in the same time, the existence of surface plasmon-polaritons allowed for better characterization of the optical properties of gold [37].…”

Section: Gold Thin Filmsmentioning

confidence: 99%

Ultra-thin films for plasmonics: a technology overview

Malureanu

Lavrinenko

2015

Nanotechnology Reviews

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Ultra-thin films with low surface roughness that support surface plasmon-polaritons in the infra-red and visible ranges are needed in order to improve the performance of devices based on the manipulation of plasmon propagation. Increasing amount of efforts is made in order not only to improve the quality of the deposited layers but also to diminish their thickness and to find new materials that could be used in this field. In this review, we consider various thin films used in the field of plasmonics and metamaterials in the visible and IR range. We focus our presentation on technological issues of their deposition and reported characterization of film plasmonic performance.

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Optical characterisation of gold using surface plasmon-polaritons

Cited by 118 publications

References 19 publications

Waveguide surface plasmon resonance studies of surface reactions on gold electrodes

Waveguide surface plasmon resonance studies of surface reactions on gold electrodes

Direct imaging of surface plasmon polariton dispersion in gold and silver thin films

Ultra-thin films for plasmonics: a technology overview

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