Dispersion filter for spectral and spatial resolution of pure rotational Raman scattering
Optics Letters, Vol. 23, Issue 20, pp. 1615-1617 (1998)
http://dx.doi.org/10.1364/OL.23.001615
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Abstract
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.
© 1998 Optical Society of America
[of America ]
OCIS Codes
(230.5480) Optical devices : Prisms
(280.2470) Remote sensing and sensors : Flames
(300.6540) Spectroscopy : Spectroscopy, ultraviolet
(330.6130) Vision, color, and visual optics : Spatial resolution
(330.6180) Vision, color, and visual optics : Spectral discrimination
Citation
Noah D. Finkelstein, Azer P. Yalin, Walter R. Lempert, and Richard B. Miles, "Dispersion filter for spectral and spatial resolution of pure rotational Raman scattering," Opt. Lett. 23, 1615-1617 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-20-1615
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