Showing papers on "Surface plasmon resonance published in 1979"
IBM1
TL;DR: In this paper, the Raman spectra of 4-pyridine-carboxaldehyde-doped Al-${\mathrm{Al}}-2}$${O}}_{3}$-Ag tunnel junctions are shown to be strongly enhanced under conditions which permit the direct excitation of the surface plasmon modes of Ag.
Abstract: The Raman spectra of 4-pyridine-carboxaldehyde-doped Al-${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$-Ag tunnel junctions evaporated onto Ca${\mathrm{F}}_{2}$ films and optical diffraction gratings show that the molecular Raman scattering is strongly enhanced under conditions which permit the direct excitation of the surface plasmon modes of Ag. This suggests that the surface plasmon is an intermediate state in surface-enhanced Raman scattering.
153 citations
116 citations
TL;DR: In this paper, the angular distribution of fluorescence emission from dye molecules excited by surface plasmon waves in a silver film is reported, and a sharply peaked angular profile in the prism half space is obtained.
82 citations
51 citations
44 citations
TL;DR: The spectral dependence of electroreflectance near the surface plasma frequency of Ag(111) has been measured for various degrees of surface roughness as mentioned in this paper, and the results agree well with a recent theory which predicts a splitting of the surface plasmon dispersion relation on a statistically rough surface.
15 citations
TL;DR: In this paper, the effects of surface plasmon dispersion and single-particle effects on the image force were studied for parallel incident particles, avoiding the unphysical logarithmic divergence of the parallel force at the surface.
Abstract: Effects of surface plasmon dispersion and single-particle effects on the image force are studied for parallel incident particles. The inclusion of such effects avoids the unphysical logarithmic divergence of the parallel force at the surface. The probability of surface plasmon excitation is reduced with respect to the undispersed model.
6 citations
TL;DR: The two-component structure predicted by Barton in the resonant coupling of molecules to surface plasmons is further investigated in this article, where the elastic scattering of light resonant with a molecular excitation near the surface plasmon frequency is considered and the spectral behaviour of the scattered intensity is investigated.
Abstract: The two-component structure predicted by Barton in the resonant coupling of molecules to surface plasmons is further investigated. The elastic scattering of light resonant with a molecular excitation near the surface plasmon frequency is considered and the spectral behaviour of the scattered intensity is investigated. The jellium model is adopted for the metal-plus-field system taking account of relativistic dispersion but ignoring hydrodynamic pressure effects. For different sets of the system parameters the existence of the double peaks is clearly demonstrated and the positions of the peaks relative to the surface plasmon frequency, their widths and the division of the total weight between them is discussed.
4 citations
TL;DR: In this paper, the dielectric response of an electron gas has been investigated with a view to understanding the small momentum behavior of the plasmon peak in inelastic electron energy loss spectra.
Abstract: The dielectric response of an electron gas has been investigated with a view to understanding the small momentum behaviour of the plasmon peak in inelastic electron energy loss spectra. It is shown that the lifetime of the plasmon and the width of the incident beam both contribute to the apparent flattening of the plasmon dispersion which has been seen to occur in some metals (magnesium, aluminium, indium) for plasmon wavevectors less than ~O·5 A -1. Expressions, beyond the random phase approximation, are derived for the dispersion coefficients up to fourth order in the plasmon wavevector. Good agreement with experiment is obtained.
3 citations
IBM1
TL;DR: In this article, the cooperative emission of an excited molecular monolayer into surface plasmons of a metallic substrate is described, and it is shown theoretically how the two-dimensional analogue of superradiance can arise, leading to a highly directional and very intense surface plasmon pulse.
Abstract: The cooperative emission of an excited molecular monolayer into surface plasmons of a metallic substrate is described. The effect arises from the very strong coupling of an electronically excited molecule to surface plasmons at distances that are short compared to the wavelength of the electronic transition. Strong resonant enhancement of this excited molecule-surface plasmon interaction occurs for near-degeneracy of the electronic transition frequency and the asymptotic surface plasmon frequency ωp/21/2. It is shown theoretically how the two-dimensional analogue of superradiance can arise, leading to a highly directional and very intense surface plasmon pulse. This pulse or series of pulses has soliton-like characteristics and may be expected to propagate for considerably longer distances along the metal-vacuum interface than do individual surface plasmons.
3 citations
TL;DR: In this article, an ionic beam technique is suggested for observing the effects of surface plasmon dispersion at optical frequencies, which is suited for the scattering of light of frequency Omega approximately = omega s, by the ions near the surface for which a double-peak structure is expected to reveal information about the theoretical form of the surface particle dispersion relation.
Abstract: An ionic beam technique is suggested for observing the effects of surface plasmon dispersion at optical frequencies. Near a metallic surface the energy levels of a one-electron ion are Stark-split by the ionic image field and external electric fields. The latter can be adjusted to obtain fine tuning between the ion and the surface plasmon frequency at omega s. The technique is suited for the scattering of light of frequency Omega approximately= omega s, by the ions near the surface for which a double-peak structure is expected to reveal information about the theoretical form of the surface plasmon dispersion relation.