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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 4934–4936

Probing molecular absorption under slow-light propagation using a photonic crystal waveguide

Isabelle Dicaire, Alfredo De Rossi, Sylvain Combrié, and Luc Thévenaz  »View Author Affiliations


Optics Letters, Vol. 37, Issue 23, pp. 4934-4936 (2012)
http://dx.doi.org/10.1364/OL.37.004934


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Abstract

High-resolution infrared absorption spectroscopy of acetylene gas is demonstrated in a dispersion-engineered photonic crystal waveguide under slow-light propagation. Experimental enhancement factors of 0.31 and 1.00 are obtained for TE and TM polarization, respectively, for group indices ranging from 1.5 to 6.7. The dependence of molecular absorption on the evanescent electric-field distribution and on the group index under structural slow-light illumination is experimentally demonstrated and confirmed by time-domain simulations.

© 2012 Optical Society of America

OCIS Codes
(260.2030) Physical optics : Dispersion
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

History
Original Manuscript: August 23, 2012
Revised Manuscript: October 17, 2012
Manuscript Accepted: October 18, 2012
Published: November 28, 2012

Citation
Isabelle Dicaire, Alfredo De Rossi, Sylvain Combrié, and Luc Thévenaz, "Probing molecular absorption under slow-light propagation using a photonic crystal waveguide," Opt. Lett. 37, 4934-4936 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-23-4934


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