激光偏振喇曼光谱在确定分子振动模的对称性和红外光谱结构分析方面具有重要作用,本文报道了利用532nm激光从实验上测定了丙酮、甲醇、乙二醇和甲酰胺分子的激光偏振喇曼光谱,确定了各喇曼谱线对应的喇曼频移。测定了丙酮、甲醇、乙二醇和甲酰胺分子各喇曼频移对应的退偏比,并对各条谱线所属正则振动模的对称性进行了初步分析。 Laser Polarization Raman Spectroscopy plays an important role in determining the symmetry of molecular vibrational modes and analyzing the structure of infrared spectra. Laser Raman spectroscopy of acetone, methanol, ethylene glycol and formamide was experimentally determined using a 532 nm laser. , The Raman shift corresponding to each Raman spectrum is determined. The depolarization ratios corresponding to the Raman shifts of acetone, methanol, ethylene glycol and formamide molecules were measured and the symmetry of regular vibration modes belonging to each spectrum was analyzed.