Multifrequency Stimulated Raman Scattering in Light and Heavy Water

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• 作者：V. S. Gorelik ; A. I. Vodchits ; V. A. Orlovich
• 关键词：heavy water ; cuvette ; frequency ; stimulated Raman scattering ; laser ; spectrum ; vibrations ; pulses ; generation
• 刊名：Journal of Russian Laser Research
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：36
• 期：6
• 页码：562-569
• 全文大小：299 KB
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• 作者单位：V. S. Gorelik (1)
  A. I. Vodchits (2)
  V. A. Orlovich (2)
  
  1. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii Prospect 53, Moscow, 119991, Russia
  2. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Independence Avenue 68, Minsk, 220072, Belarus
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Laser Technology and Physics and Photonics
  Microwaves, RF and Optical Engineering
  Russian Library of Science
  
• 出版者：Springer New York
• ISSN：1573-8760

文摘

We establish the regularities of changes in the spectra of stimulated Raman scattering in light water (H<sub>2sub>O) and heavy water (D<sub>2sub>O) under changing laser excitation regimes. We find several satellites occurring in Stokes and anti-Stokes regions at high pumping intensities. We study the spectra of stimulated Raman scattering in H<sub>2sub>O and D<sub>2sub>O under excitation by the second optical harmonic (532 nm) of a YAG: Nd3+ laser generating ultrashort (60 ps) pulses with a recurrence frequency of 20 Hz and a peak power of 10-100 MW. We show that intense spectral bands determined by both intramolecular modes of light/heavy water and intermolecular modes - librations or translations of the molecular characteristic of ice - occur in stimulated Raman scattering spectra upon an increase in exciting radiation intensity. Our experiments demonstrate the prospects of using the phenomenon of stimulated Raman scattering for developing coherent waves corresponding to intramolecular and lattice modes of light and heavy water. The phenomenon can also be used for developing a deuterium plasma with high effective temperature in the region of laser radiation focusing in heavy water and low-temperature water in the boundary region. Keywords heavy water cuvette frequency stimulated Raman scattering laser spectrum vibrations pulses generation