Enhanced stimulated Raman scattering by femtosecond ultraviolet plasma grating in water

Liu, Fengjiang; Yuan, Shuai; He, Bei; Nan, Junyi; Khan, Abdul Qayyum; Ding, Liang’en; Zeng, Heping

doi:10.1063/1.5018629

Cited by 12 publications

(12 citation statements)

References 30 publications

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“…Of great interest are works devoted to the study of stimulated Raman scattering (SRS) spectra of light [ 27–29 ] and heavy [ 29,30 ] water, as well as their mixtures. [ 31–33 ] It is known that SRS lasing in a liquid volume of water occurs with the formation of plasma as a result of optical breakdown.…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Raman scattering in mixtures of light and heavy water

Горелик

Avakyants

Skrabatun

2021

J Raman Spectroscopy

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The registration of spectra (in the range 10–4000 cm−1) of spontaneous Raman scattering in protium and deuterium water, as well as in its mixtures, is reported. The mixtures were prepared with different volume ratios of light and heavy water (from 5:1 to 1:9). As a result of taking into account the Bose factor in the low‐wavenumber region, bands corresponding to the cluster translational modes of water were found. A change in the Raman shift of cluster modes depending on the isotopic composition of a mixture of liquids was recorded. In the wavenumber range 1000–1700 cm−1, the manifestation of deformation modes of H2O, D2O, and HOD molecules was found in the Raman spectra. Stretching vibrations of mixtures of light and heavy water correspond to the wavenumber range of 2000–4000 cm−1. The obtained dependences of the scattered radiation intensity were used to construct difference spectra, which made it possible to determine the content of D2O molecules in light water. The presented experimental results are of interest for diagnosing the presence of deuterium water in the biosphere and for analyzing nonlinear optical processes in water.

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Section: Introductionmentioning

confidence: 99%

Spontaneous Raman scattering in mixtures of light and heavy water

Горелик

Avakyants

Skrabatun

2021

J Raman Spectroscopy

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“…Except for the initial optical process, there are some other complex phenomena including self‐focusing, laser‐induced breakdown, shock wave generation, and cavity bubble . Therefore, SRS is widely used to study the properties of liquid water, for example, Liu et al found the enhancement of SRS conversion along ultraviolet femtosecond laser filaments in water; Yuan et al studied the effect of divergence, polarizations, and pulse shapes on the SRS of liquid water by 532‐nm laser; Kumar et al compared SRS spectra of water by the 355‐, 532‐, and 1,064‐nm lasers . Our group has also studied the structures of liquid water molecules under different conditions by SRS, but the details of two‐state model of water are not clear yet.…”

Section: Introductionmentioning

confidence: 99%

Proving coexistence of ice‐like and quartz‐like structure in localized liquid water by stimulated Raman scattering

Wang

Fang

et al. 2019

J Raman Spectroscopy

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Liquid water is a complex system consisting of ice‐like and quartz‐like structure based on the classic two‐state model. Although lots of theoretical work have been developed about this model, the experimental evidences are still needed. Herein, a 355‐nm pulse laser is employed to excite stimulated Raman scattering (SRS) of liquid water both in bulk and on surface, with the generation of shockwave‐induced dynamic high pressure. Two characteristic features Raman peaks of both spontaneous Raman and SRS indicate the coexistence of two structures in localized water area. The ice‐like structure corresponds to ice Ih phase under the presented conditions, because the pressure dependence behavior of Raman shift agree well with the anomaly of diffusion coefficient of ice Ih phase, when the shock wave‐induced dynamic high pressure forms. Two structures show different pressure‐dependent behaviors based on the SRS results; meanwhile, the distribution of two structures is different in bulk and on surface water.

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“…h) Utilization of Au nanoparticles as contrast agents for imaging filamentary plasma grating in experiments of enhanced stimulated Raman scattering through a water sample. Reproduced with permission [171]. Copyright 2018, American Institute of Physics.…”

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confidence: 99%

Nonlinear Propagation of Laser Light in Plasmonic Nanocomposites

Agiotis

Meunier

2022

Laser & Photonics Reviews

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Plasmonic nanocomposites have been extensively studied for over 3 decades. According to early theoretical studies, a large enhancement of nonlinear response has been predicted. Nonetheless, the promised enhancement of coherent or Kerr-type nonlinearities incurs major limitations related to strong absorption and saturation effects. Accordingly, diffraction-limited interactions and long-scale propagation in ultrafast timescales are undermined despite nanoscale-localized electronic field enhancement. Seemingly only nanometric devices operating at low intensity regimes are benefitted from the foresaid effect. Nonetheless, numerous studies have still exploited configurable properties of the nonlinear response of plasmonic nanocomposites, such as nonlinear absorption, high-order nonlinearities, and diffusive nonlinearities for the development of novel processes within the framework of nonlinear wave propagation described by effective medium properties. In this review, the most recent developments on the understanding of the nonlinear response of metals and plasmonic nanocomposites in various temporal regimes are presented. Furthermore, a synthesis of their experimentally determined third-order properties obtained by various experimental techniques, along with practical considerations, is provided. Computational models used for the formulation of nonlinear wave propagation in plasmonic nanocomposites are subsequently presented, corresponding to applicable concepts. Most recent related applications are concisely summarized, indicating the directions of increasing interest in the field, and outlining shortcomings.

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Enhanced stimulated Raman scattering by femtosecond ultraviolet plasma grating in water

Cited by 12 publications

References 30 publications

Spontaneous Raman scattering in mixtures of light and heavy water

Spontaneous Raman scattering in mixtures of light and heavy water

Proving coexistence of ice‐like and quartz‐like structure in localized liquid water by stimulated Raman scattering

Nonlinear Propagation of Laser Light in Plasmonic Nanocomposites

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