Raman investigation of water OH stretching vibration

Zhe Liu; Xiaoqi Li; Yuyao Li

doi:10.1117/12.2653582

18 November 2022 Raman investigation of water OH stretching vibration

Zhe Liu, Xiaoqi Li, Yuyao Li

Proceedings Volume 12473, Second International Conference on Optics and Communication Technology (ICOCT 2022); 124730N (2022) https://doi.org/10.1117/12.2653582
Event: Second International Conference on Optics and Communication Technology (ICOCT 2022), 2022, Hefei, China

Abstract

In this paper, the combination of spontaneous and stimulated Raman spectroscopy is used to further explore the relationship between OH stretching vibration and hydrogen bond in water under atmospheric pressure and dynamic high pressure and present the change process of hydrogen bond structure in liquid water from a microscopic point of view. The OH spontaneous Raman spectrum of water is deconvoluted into two characteristic peaks, which are 3213 cm-1 and 3436 cm-1 respectively. They belong to the OH stretching vibration under the action of strong hydrogen bond and weak hydrogen bond. In stimulated Raman scattering, under the action of plasma shock wave, the bond length of hydrogen bond is shortened, resulting in the elongation of OH bond length. Corresponding to the enhancement of hydrogen bond, the OH stretching vibration of water is weakened, and the Raman peak moves to the low wave number direction to 3396 cm 1. In the stimulated Raman scattering experiment, due to the exponential enhancement of the output signal, the weaker vibration mode will be masked by the stronger vibration mode. Therefore, only one vibration mode is observed in the spectrum. In this paper, the changes of corresponding hydrogen bond structure under spontaneous and stimulated Raman scattering are compared and analyzed. The research results are helpful to further explore the microphysical mechanism of liquid water molecular interaction and provide a reference for the mechanism research in related fields.

Citation Download Citation

Zhe Liu, Xiaoqi Li, and Yuyao Li "Raman investigation of water OH stretching vibration", Proc. SPIE 12473, Second International Conference on Optics and Communication Technology (ICOCT 2022), 124730N (18 November 2022); https://doi.org/10.1117/12.2653582

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