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Angular output of hollow, metal-lined, waveguide Raman sensors [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
2,023-2,025 : digital, PDF file
Additional Creators
National Energy Technology Laboratory (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Hollow, metal-lined waveguides used as gas sensors based on spontaneous Raman scattering are capable of large angular collection. The collection of light from a large solid angle implies the collection of a large number of waveguide modes. An accurate estimation of the propagation losses for these modes is required to predict the total collected Raman power. We report a theory/experimental comparison of the Raman power collected as a function of the solid angle and waveguide length. New theoretical observations are compared with previous theory appropriate only for low-order modes. A cutback experiment is demonstrated to verify the validity of either theory. The angular distribution of Raman light is measured using aluminum and silver-lined waveguides of varying lengths.
Report Numbers
E 1.99:tpr-3730
tpr-3730
Subject(s)
Note
Published through SciTech Connect.
04/20/2012.
"tpr-3730"
Applied Optics 51 12 ISSN 0003--6935 AC
Biedrzycki, Stephen; Buric, Michael P.; Falk, Joel; Woodruff, Steven D.
Funding Information
DE-FE0004000
View MARC record | catkey: 13820413