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Study on Effect of Intermolecular Fermi Resonance on Raman Scattering

Author: CaoAnYang
Tutor: SunXiuPing
School: Changchun University of Science and Technology
Course: Optics
Keywords: Intermolecular Fermi resonance Stimulated Raman Scattering Raman scattering cross section
CLC: O437.3
Type: Master's thesis
Year: 2011
Downloads: 8
Quote: 0
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Abstract


Thesis research using Raman scattering spectra of liquid-core optical fiber toluene and m-xylene mixed solution the intermolecular Fermi resonance enhanced stimulated Raman scattering ( SRS ) of the mixed solution . Got mixed solution were measured spontaneous Raman and stimulated Raman spectroscopy . Discussed the different mixing ratio of the solution and the Raman scattering cross section , the peak intensity , the threshold value changes in relationship . From the experimental results show that toluene and m-xylene different volume ratio of the solution ( s ) in the Raman frequency shift amount of the 1002 cm-1 V1 line and the amount of frequency shift of 2920 cm -1 , 3058 cm -1 v2 line three the form of vibration simultaneously stimulated v2 the first order Stokes (Stokes) I threshold below v1 order Stokes threshold value, and v2 and two Stokes lines have become the main peak with the volume ratio of the solution is different . We believe that the main mechanism of this phenomenon is the intermolecular Fermi resonance Raman scattering . And use of the theory of Raman scattering cross section of a reasonable explanation . The experimental results with theoretical match , a mixed solution of SRS in tunable fiber laser Raman amplifier has a wide range of applications .

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CLC: > Mathematical sciences and chemical > Physics > Optics > Nonlinear optical ( light and matter) > Stimulated Raman Scattering
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