Dispersion filter for spectral and spatial resolution of pure rotational Raman scattering

被引：12
|
作者：
Finkelstein, ND [1 ]
Yalin, AP [1 ]
Lempert, WR [1 ]
Miles, RB [1 ]
机构：
[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA
来源：
OPTICS LETTERS | 1998年 / 23卷 / 20期
关键词：
D O I：
10.1364/OL.23.001615
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new filtering technique for Raman spectroscopy utilizes atomic vapor to suppress strong elastic and Rayleigh scattering while simultaneously resolving individual rotational Raman lines. Filtered images capture high-resolution spectral information in one dimension and spatial resolution in the other dimension. The filter is based on resonance enhanced dispersion, where the index of refraction varies dramatically. In a simple prism geometry the vapor disperses incident radiation according to frequency. A mercury-vapor-based dispersion filter has been fabricated, modeled, and demonstrated to capture pure rotational Raman scattering from CO2. (C) 1998 Optical Society of America.
引用
收藏
页码：1615 / 1617
页数：3
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