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Novel waveguide configuration for convenient and sensitive fluorescence and Raman measurements of liquids over optical fibers

Novel waveguide configuration for convenient and sensitive fluorescence and Raman measurements of liquids over optical fibers
Novel waveguide configuration for convenient and sensitive fluorescence and Raman measurements of liquids over optical fibers
Fluorescence has been measured from a waveguide formed by a PTFE tube with an internal coating of a low-refractive-index amorphous fluoropolymer. The configuration is suited to taking measurements from liquids having a refractive index down to 1.32, including, in particular, aqueous solutions. The parameters which determine the optical collection efficiency have been mathematically modelled. We have produced waveguides up to 1m long, and with 0.955 mm and 0.445 mm internal radii, and measured a (fluorescence) collection enhancement factor of 3 from a 140 mm long, 0.955 mm internal radius waveguide. Work is continuing to increase the enhancement factor.
Mackenzie, S.J.
cd8df972-ec29-4adc-8d0c-30b16b96c60b
Johnson, M.
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Dakin, J.P.
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Mackenzie, S.J.
cd8df972-ec29-4adc-8d0c-30b16b96c60b
Johnson, M.
f641d826-cdd9-48dd-a328-5faa2ff570ff
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904

Mackenzie, S.J., Johnson, M. and Dakin, J.P. (1997) Novel waveguide configuration for convenient and sensitive fluorescence and Raman measurements of liquids over optical fibers. Europto EnviroSense '97, Munich, Germany. 16 - 20 Jun 1997.

Record type: Conference or Workshop Item (Paper)

Abstract

Fluorescence has been measured from a waveguide formed by a PTFE tube with an internal coating of a low-refractive-index amorphous fluoropolymer. The configuration is suited to taking measurements from liquids having a refractive index down to 1.32, including, in particular, aqueous solutions. The parameters which determine the optical collection efficiency have been mathematically modelled. We have produced waveguides up to 1m long, and with 0.955 mm and 0.445 mm internal radii, and measured a (fluorescence) collection enhancement factor of 3 from a 140 mm long, 0.955 mm internal radius waveguide. Work is continuing to increase the enhancement factor.

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More information

Published date: 1997
Venue - Dates: Europto EnviroSense '97, Munich, Germany, 1997-06-16 - 1997-06-20

Identifiers

Local EPrints ID: 76780
URI: http://eprints.soton.ac.uk/id/eprint/76780
PURE UUID: 2af3af4d-a82e-42f2-ae66-53989206fb56

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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:36

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Contributors

Author: S.J. Mackenzie
Author: M. Johnson
Author: J.P. Dakin

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