Session W45: Atom-Light Interactions: Experiment and Theory

11:15 AM–2:15 PM, Thursday, March 24, 2011
Room: A310

Sponsoring Unit: DAMOP
Chair: Charles Clark, National Institute of Standards and Technology

Abstract ID: BAPS.2011.MAR.W45.13

Abstract: W45.00013 : Counter-Propagating Coherent Stimulated Raman Spectroscopy for Remote Sensing in Air

1:39 PM–1:51 PM

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  Luqi Yuan
    (Texas A\&M University)

  Andrew Traverso
  Dmitri Voronine
  Pankaj Jha
  Kai Wang
  Alexei Sokolov
  Marlan Scully

We analyze phase-matching conditions in various four-wave mixing schemes for coherent nonlinear optical spectroscopy in the counter-propagating beam configuration. Coherent stimulated Raman spectroscopy satisfies the conditions and gives a signal containing specific molecular spectroscopic information. A counter-propagating broadband and a narrowband pulses are used to measure the Raman spectrum with a single shot. In addition, the nonresonant background due to the nondegenerate four-wave mixing is suppressed. Using this technique we develop a new scheme for standoff spectroscopy in atmosphere by using nitrogen molecules in air as a gain medium for remote lasing.

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