Frequency responses of stimulated thermal scattering in colored acetone and stimulated Brillouin scattering in pure acetone

Abstract

Abstract:

In previous experiments the very complicated system or high-precision and large-range spectra-analysis apparatus was used to distinguish stimulated thermal scattering (STS) and stimulated Brillouin scattering (SBS) because the frequency shift of SBS is more larger than of STS which is a few tens MHz generally, but the shift of SBS reach several GHz typically. It will be difficult for common laboratorial conditions. Frequency responses of STS in Cu(NO3)2 colored acetone and SBS in pure acetone were investigated experimentally. It was showed that linewidth of SBS fluctuated random and of STS changed regularly as pump power increased. It can become a convenient and cheap approach to distinguish STS and SBS instead of high-precision and large-range spectrometer or complicated system. This method, to our knowledge, has not been reported in references.

Key words: nonlinear optics, stimulated thermal scattering, stimulated Brillouin scattering, frequency

LIU An-Ling, ZHANG Wei-Jun, GAO Xiao-Ming. Frequency responses of stimulated thermal scattering in colored acetone and stimulated Brillouin scattering in pure acetone[J]. J4, 2009, 26(4): 473-476.

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