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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 19 — Jul. 1, 2007
  • pp: 3911–3920

Investigation of OH X 2Π collisional kinetics in a flame using picosecond two-color resonant four-wave-mixing spectroscopy

Xiangling Chen and Thomas B. Settersten  »View Author Affiliations


Applied Optics, Vol. 46, Issue 19, pp. 3911-3920 (2007)
http://dx.doi.org/10.1364/AO.46.003911


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Abstract

Time-resolved two-color resonant four-wave-mixing spectroscopy was used to investigate collisions affecting the ground electronic state of the hydroxyl radical. Picosecond laser pulses provided adequate time resolution for measurements in an atmospheric-pressure methane–air flame. The grating spectroscopy technique used a combination of double resonance, time-delayed probing, and independent control of the polarization of each of the four fields involved in the wave-mixing process to enable measurement of the decay of laser-induced population, alignment, and orientation, as well as state-to-state transfer of these three moments. Results are presented for individual rotational levels of OH in X Π 3 / 2 2 ( v = 1 ) .

© 2007 Optical Society of America

OCIS Codes
(020.2070) Atomic and molecular physics : Effects of collisions
(300.6290) Spectroscopy : Spectroscopy, four-wave mixing
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Combustion

History
Original Manuscript: October 16, 2006
Manuscript Accepted: December 27, 2006
Published: June 12, 2007

Citation
Xiangling Chen and Thomas B. Settersten, "Investigation of OH X2Π collisional kinetics in a flame using picosecond two-color resonant four-wave-mixing spectroscopy," Appl. Opt. 46, 3911-3920 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-19-3911

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