An analytical model for Rayleigh-Brillouin scattering spectra in gases

被引：26
|
作者：
Ma, Yong [1 ]
Fan, Fan [1 ]
Liang, Kun [1 ]
Li, Hao [1 ]
Yu, Yin [1 ]
Zhou, Bo [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China
来源：
JOURNAL OF OPTICS | 2012年 / 14卷 / 09期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Rayleigh Brillouin scattering; spectrum; line shape; voigt; MOLECULAR GASES; LINE-SHAPES; BIREFRINGENCE; FIBER;
D O I：
10.1088/2040-8978/14/9/095703
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An analytical model for Rayleigh-Brillouin scattering (RBS) spectra of gases is developed and discussed in this paper. The well-recognized S6 and S7 models only have a numerical form and are complex to process in real applications; simple Gaussian models are imprecise and suffer from greater error. A new model (V3) based on the spectral line broadening theory and the Voigt profile is established. This model is easy to process as it has an analytical form, and it is proved to have good accordance with the S7 model. In addition, this model can separate the Rayleigh and Brillouin lines, and the measured Brillouin shift is proved to match theoretical values.
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收藏
页数：6
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