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Optics Letters

Optics Letters


  • Vol. 18, Iss. 19 — Oct. 1, 1993
  • pp: 1672–1674

Two-dimensional imaging of OH in flames by use of polarization spectroscopy

K. Nyholm, R. Fritzon, and M. Aldén  »View Author Affiliations

Optics Letters, Vol. 18, Issue 19, pp. 1672-1674 (1993)

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Two-dimensional imaging of OH radicals in a premixed CH4/O2 flame by polarization spectroscopy is reported. Polarization spectroscopy was applied in a copropagating geometry with linearly polarized pump and probe beams. The images were measured with the laser frequency tuned to resonance with the Q1(9) A2Σ−X2Π(0, 0) transition of OH. The signal dependence on the crossing angle between the pump and probe beams was also studied. The possibilities for two-dimensional temperature mapping were demonstrated by measuring images at two different rotational lines and by extracting the temperature map from these measurements.

© 1993 Optical Society of America

Original Manuscript: May 21, 1993
Published: October 1, 1993

K. Nyholm, R. Fritzon, and M. Aldén, "Two-dimensional imaging of OH in flames by use of polarization spectroscopy," Opt. Lett. 18, 1672-1674 (1993)

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