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一、引言本世纪20年代初,Smekal从理论上预言,当频率为ν_0的单色光入射到物质上后,物质中的分子会对入射光产生散射,散射光的频率为ν_0±△ν。1928年,印度物理学家喇曼(C.V.Raman)在研究液体苯的散射光谱时,从实验上发现了这种散射,称之为喇曼散射(Raman Scattering)或喇曼光谱(Raman Spectrum),直至现在称之为喇曼光谱学(Raman Spectroscopy)。后来发现在摄取的散射光谱中,在激发线的两侧各有一组谱线,在低频一侧的谱线其频率为ν_0—△ν(ν_0为激发线的频率,△ν为该
I. INTRODUCTION In the early 1920s, Smekal theoretically predicted that when a monochromatic light of frequency ν_0 is incident on a substance, molecules in the substance scatter incident light and the frequency of the scattered light is ν_0 ± Δν. In 1928, the Indian physicist CVRaman discovered this scattering experimentally when studying the scattering spectrum of liquid benzene, which was called Raman Scattering or Raman Spectrum. Until now called Raman spectroscopy (Raman Spectroscopy). Later found in the absorption of the scattering spectrum, the excitation line on each side of a set of spectral lines, the frequency spectrum on the low frequency side of its frequency ν_0- △ ν (ν_0 for the excitation line frequency, △ ν is the