Collisional effects on quantum cascade laser induced molecular alignment

Geoffrey Duxbury, Nicola Tasinato, Kenneth Hay, David Wilson, Nigel Langford, JKC Lewis (Editor), A PredoiCross (Editor)

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)


Intra-pulse quantum cascade laser spectrometers are able to produce both saturation and molecular alignment of a molecular gas. The resultant time domain spectra resemble those seen in coherent optical nutation experiments. In this paper we discuss the ways in which this technique may be used to investigate nitrous oxide-foreign gas collisions, and also those involving a Dicke narrowed line of water. In both cases the chirp rate dependence of the pressure broadening, and its dependence on the collision partner is demonstrated.
Original languageEnglish
Number of pages9
Publication statusPublished - 2010
Event20th International Conference on Spectral Line Shapes - St.Johns, Canada
Duration: 6 Jun 201011 Jun 2010


Conference20th International Conference on Spectral Line Shapes


  • infrared spectroscopy
  • Maxwell-Bloch equations
  • quantum cascade lasers
  • intermolecular energy transfer
  • molecular collision process

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