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Proceedings Paper

Experimental verification of the effect of slow light on molecular absorption
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Paper Abstract

The absorption of light by a gas molecule has been measured comparatively using light propagating in normal conditions and in a slow light regime. The experiment is designed to make the 2 measurements possible without modifying the interaction conditions, so that the sole effect of slow light is unambiguously observed. A 26% group velocity reduction induced by stimulated Brillouin scattering in a gas-filled microstructured fiber caused no observable change in the measured absorption, so that it is proved that material slow light does not enhance Beer-Lambert absorption and has a null impact on gas sensing or spectroscopic applications.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75034W (5 October 2009); doi: 10.1117/12.835392
Show Author Affiliations
Luc Thevenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Sanghoon Chin, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Isabelle Dicaire, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Jean-Charles Beugnot, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Stella Foaleng Mafang, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Miguel González Herráez, Univ. de Alcalá (Spain)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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