Open AccessProfile comparison between the Raman-induced Kerr effect spectrum and photoacoustic Raman spectrum of methane
Author(s) -
Yuanqin Yu,
Xiaoguo Zhou,
Kui Lin,
Jinghua Dai,
Shilin Liu,
Xingxiao Ma
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.2740
Subject(s) - raman spectroscopy , coherent anti stokes raman spectroscopy , photoacoustic imaging in biomedicine , materials science , laser , interference (communication) , optics , methane , kerr effect , spectral line , molecular physics , raman scattering , physics , nuclear magnetic resonance , chemistry , channel (broadcasting) , electrical engineering , organic chemistry , quantum mechanics , engineering , nonlinear system , astronomy
Two kinds of spectrum, the Raman-Induced Kerr Effect Spectrum(RIKES)and the Photoacoustic Raman Spectrum(PARS),were measured simultaneously for the ν1 vibrational band of methane. The difference between the profiles of the two spectra obtained with linearly polarized pump and Stokes laser beams lies in that, the intensity of RIKES spectrum is stronger at the small Raman shift side, and is weaker at the large Raman shift side compared to the PARS spectrum. It was confirmed that this difference is caused by the interference between the resonant and non-resonant parts of the third order non-linear susceptibility.