The theory of Surface Enhanced Hyper Raman Scattering (A review)

Polubotko, A. M.; Chelibanov, V. P.

doi:10.1134/s0030400x1512019x

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…The Dipole-Quadrupole theory of surface enhanced optical processes is published in detail in our works. The SERS theory is published in the monograph [3], the SEHRS theory is presented in [6] and the SEIRA theory in [7]. Therefore, here we expound only main statements, which are important for this work.…”

Section: Main Statements Of the Dipole-quadrupole Sers Theorymentioning

confidence: 99%

Peculiarities of the SERS Spectra of 4,4′-Bipyridine Molecule in a Single Molecule Detection Regime

Polubotko

Solovyeva

2018

Opt. Spectrosc.

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The paper briefly describes main statements of the theory of the SERS spectra with regards to the single molecule regime, when the enhancement achieves the values 15 14 10 10  . Analysis of the spectra of 4,4'-bypyridine, obtained on the dimer lattice of sharp nanoparticles points out that the observed enhancement is caused exclusively by a strong quadrupole light-molecule interaction, which manifests in the presence of lines, caused by vibrations with the unit irreducible representations of the 2 D and h D 2 symmetry groups, which apparently describe the symmetry properties of the molecule. The study of the spectra, obtained by Tip enhanced spectroscopy demonstrates that the strong quadrupole light-molecule interaction still plays a leading role, however the strong dipole interaction still manifests in the existence of very weak forbidden lines. This result apparently is associated with another experimental geometry .

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Section: Main Statements Of the Dipole-quadrupole Sers Theorymentioning

confidence: 99%

Peculiarities of the SERS Spectra of 4,4′-Bipyridine Molecule in a Single Molecule Detection Regime

Polubotko

Solovyeva

2018

Opt. Spectrosc.

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“…The result of Raman scattering is a Raman spectrum, which is unique to the individual molecule or crystal, and is therefore considered and studied as a “fingerprint” of the specific material [ 4 , 5 ]. In recent times, since the signal of Raman scattering is very weak, a number of new techniques for Raman scattering enhancement have been developed [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ].When the luminescent molecule is excited by interaction with a photon of electromagnetic radiation, fluorescence or phosphorescence may occur. However, if the electromagnetic energy is released immediately, it is a fluorescence process; and if the release of electromagnetic energy is delayed, it is a phosphorescence process.…”

Section: Introductionmentioning

confidence: 99%

Raman and Photoluminescence Spectroscopy with a Variable Spectral Resolution

Pavić

Šoda

Gašparić

et al. 2021

Sensors

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Raman and photoluminescence (PL) spectroscopy are important analytic tools in materials science that yield information on molecules’ and crystals’ vibrational and electronic properties. Here, we show results of a novel approach for Raman and PL spectroscopy to exploit variable spectral resolution by using zoom optics in a monochromator in the front of the detector. Our results show that the spectral intervals of interest can be recorded with different zoom factors, significantly reducing the acquisition time and changing the spectral resolution for different zoom factors. The smallest spectral intervals recorded at the maximum zoom factor yield higher spectral resolution suitable for Raman spectra. In contrast, larger spectral intervals recorded at the minimum zoom factor yield the lowest spectral resolution suitable for luminescence spectra. We have demonstrated the change in spectral resolution by zoom objective with a zoom factor of 6, but the perspective of such an approach is up to a zoom factor of 20. We have compared such an approach on the prototype Raman spectrometer with the high quality commercial one. The comparison was made on ZrO2 and TiO2 nanocrystals for Raman scattering and Al2O3 for PL emission recording. Beside demonstrating that Raman spectrometer can be used for PL and Raman spectroscopy without changing of grating, our results show that such a spectrometer could be an efficient and fast tool in searching for Raman and PL bands of unknown materials and, thereafter, spectral recording of the spectral interval of interest at an appropriate spectral resolution.

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“…52 In addition, theories going beyond the dipole approximation, which include dipole and quadrupole light-molecule and light-metal interactions, as well as gradients of the local electric field, have been developed and used for the interpretation of SEHRS spectra from small molecules. 36,52,[54][55][56][57][58][59] Field gradient effects are of particular interest, as they can contribute not only to the enhancements but also to the selection rules in SEHRS spectra. 20,52 4.…”

Section: Understanding the Overall Sehrs Enhancement In Experimentsmentioning

confidence: 99%

Surface enhanced hyper Raman scattering (SEHRS) and its applications

2017

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Surface enhanced hyper Raman scattering (SEHRS) and its applicationsSurface enhanced hyper Raman scattering (SEHRS), spontaneous, two-photon excited, plasmon-enhanced Raman scattering, provides a wealth of vibrational information that can be useful in many directions of spectroscopy. As featured in:See Being regarded as a non-linear analogue of surface enhanced Raman scattering (SERS), SEHRS shares most of its properties, but also has additional characteristics. They include complementary spectroscopic information resulting from different selection rules and a stronger enhancement due to the non-linearity in excitation. In practical spectroscopy, this can translate to advantages, which include a high selectivity when probing molecule-surface interactions, the possibility of probing molecules at low concentrations due to the strong enhancement, and the advantages that come with excitation in the near-infrared. In this review, we give examples of the wealth of vibrational spectroscopic information that can be obtained by SEHRS and discuss work that has contributed to understanding the effect and that therefore provides directions for SEHRS spectroscopy. Future applications could range from biophotonics to materials research.

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The theory of Surface Enhanced Hyper Raman Scattering (A review)

Cited by 11 publications

References 29 publications

Peculiarities of the SERS Spectra of 4,4′-Bipyridine Molecule in a Single Molecule Detection Regime

Peculiarities of the SERS Spectra of 4,4′-Bipyridine Molecule in a Single Molecule Detection Regime

Raman and Photoluminescence Spectroscopy with a Variable Spectral Resolution

Surface enhanced hyper Raman scattering (SEHRS) and its applications

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