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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 12 — Jun. 15, 2007
  • pp: 1725–1727

Coherent versus incoherent Raman scattering: molecular coherence excitation and measurement

Dmitry Pestov, Gombojav O. Ariunbold, Xi Wang, Robert K. Murawski, Vladimir A. Sautenkov, Alexei V. Sokolov, and Marlan O. Scully  »View Author Affiliations


Optics Letters, Vol. 32, Issue 12, pp. 1725-1727 (2007)
http://dx.doi.org/10.1364/OL.32.001725


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Abstract

We present a comparative analysis of spontaneous and coherent Raman scattering on pyridine. The instantaneous excitation of the molecular coherence is done by a pair of ultrashort preparation pulses. Then, a long narrowband probe pulse is scattered off the molecular vibrations. The described hybrid technique allows for the single-shot acquisition of a background-free coherent Raman spectrum within the excitation band and its straightforward comparison with the spontaneous Raman measurements, performed in the same setup. We report a 10 5 -fold increase in the efficiency of the Raman scattering process due to the broadband pump–Stokes preparation. The coherence magnitude ( 0.5 × 10 3 ) is inferred experimentally, without a priori knowledge about the molecular structure.

© 2007 Optical Society of America

OCIS Codes
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering
(300.6290) Spectroscopy : Spectroscopy, four-wave mixing
(300.6450) Spectroscopy : Spectroscopy, Raman
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:
Spectroscopy

History
Original Manuscript: February 27, 2007
Manuscript Accepted: April 1, 2007
Published: June 6, 2007

Citation
Dmitry Pestov, Gombojav O. Ariunbold, Xi Wang, Robert K. Murawski, Vladimir A. Sautenkov, Alexei V. Sokolov, and Marlan O. Scully, "Coherent versus incoherent Raman scattering: molecular coherence excitation and measurement," Opt. Lett. 32, 1725-1727 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-12-1725

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