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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 18 — Sep. 15, 2013
  • pp: 3596–3599

Waveguide-enhanced 2D-IR spectroscopy in the gas phase

Gregory M. Greetham, Ian P. Clark, Damien Weidmann, Michael N. R. Ashfold, Andrew J. Orr-Ewing, and Michael Towrie  »View Author Affiliations


Optics Letters, Vol. 38, Issue 18, pp. 3596-3599 (2013)
http://dx.doi.org/10.1364/OL.38.003596


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Abstract

A method for obtaining high-quality 2D-IR spectra of gas-phase samples is presented. Time-resolved IR absorption spectroscopy techniques, such as 2D-IR spectroscopy, often require that beams are focused into the sample. This limits the exploitable overlapped path length through samples to a few millimeters. To circumvent this limitation, 2D-IR experiments have been performed within a hollow waveguide. This has enabled acquisition of 2D-IR spectra of low-concentration gas-phase samples, with more than an order of magnitude signal enhancement compared with the equivalent experiment in free space. The technique is demonstrated by application to the 2D-IR spectroscopy of iron pentacarbonyl.

© 2013 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(230.7370) Optical devices : Waveguides
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Spectroscopy

History
Original Manuscript: May 23, 2013
Revised Manuscript: June 28, 2013
Manuscript Accepted: August 16, 2013
Published: September 9, 2013

Citation
Gregory M. Greetham, Ian P. Clark, Damien Weidmann, Michael N. R. Ashfold, Andrew J. Orr-Ewing, and Michael Towrie, "Waveguide-enhanced 2D-IR spectroscopy in the gas phase," Opt. Lett. 38, 3596-3599 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-18-3596


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