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Accurate Measurement of Raman Depolarization Ratio in Gaseous CO2
Yu-juan Jin,Yuan-qin Yu*,Yu-xi Wang,Ke Lin,Xiao-guo Zhou,Shi-lin Liu
Author NameAffiliationE-mail
Yu-juan Jin School of Physics and Material Science, Anhui University, Hefei 230039, China  
Yuan-qin Yu* School of Physics and Material Science, Anhui University, Hefei 230039, China yyq@ahu.edu.cn 
Yu-xi Wang Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Ke Lin Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Xiao-guo Zhou Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Shi-lin Liu Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Abstract:
The Raman depolarization ratios of gaseous CO2 in the spectral range of 1240-1430 cm-1 are determined with a sensitive photoacoustic Raman spectroscopy, and more accurate data compared to the literature results are presented. The precision of the obtained depolarization ratio is achieved by measuring and fitting the dependence of the PARS signal intensity on the cross angle between the polarizations of two incident laser beams.
Key words:  Depolarization ratio, Accurate measurement, Photoacoustic Raman spec-troscopy, Global fitting
FundProject:
气相二氧化碳分子拉曼退偏比的准确测量
靳玉娟,喻远琴*,王钰熙,林珂,周晓国,刘世林
摘要:
利用灵敏的光声拉曼光谱技术对气相二氧化碳分子在1240~1430 cm-1振动光谱的拉曼退偏比进行了测量. 通过测量并拟合光声拉曼信号强度随两束入射光偏振方向夹角的变化,得到了比文献报道中更为精确的退偏比数据.
关键词:  退偏比,准确测量,光声拉曼光谱,全局拟合
DOI:10.1063/1674-0068/28/cjcp1409156
分类号: