Abstract
An experiment on high-resolution degenerate four wave mixing (DFWM) spectroscopy is performed at an unsaturated laser power and in a backward geometry. The lineshape and line broadening of the DFWM signal of the OH radical [(1,0) Q 2(11) rotational line in X 2II↔A 2∑] were measured in a propane/air premixed flame. The lineshape dependence on the relative magnitude of the collisional linewidth and the Doppler width is discussed and the influence of the large Doppler broadening in the flame causes the lineshape to be close to a Lorentzian. By fitting the data to the DFWM moving absorber model, we found that the collisional linewidth (0.1136 cm -1) for the transition was larger than other reported values for a different vibrational band of this molecule; the reason for that is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 57-62 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 35 |
| Issue number | 2 |
| Publication status | Published - 1999 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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High resolution degenerate four wave mixing spectroscopy of the OH radical : The doppler effect on the spectral lineshape and line broadening in the phase conjugate geometry. / Ryu, Jae Seok; Park, Seung Nam; Hahn, Jae Won.
In: Journal of the Korean Physical Society, Vol. 35, No. 2, 01.12.1999, p. 57-62.Research output: Contribution to journal › Article
TY - JOUR
T1 - High resolution degenerate four wave mixing spectroscopy of the OH radical
T2 - The doppler effect on the spectral lineshape and line broadening in the phase conjugate geometry
AU - Ryu, Jae Seok
AU - Park, Seung Nam
AU - Hahn, Jae Won
PY - 1999/12/1
Y1 - 1999/12/1
N2 - An experiment on high-resolution degenerate four wave mixing (DFWM) spectroscopy is performed at an unsaturated laser power and in a backward geometry. The lineshape and line broadening of the DFWM signal of the OH radical [(1,0) Q 2(11) rotational line in X 2II↔A 2∑] were measured in a propane/air premixed flame. The lineshape dependence on the relative magnitude of the collisional linewidth and the Doppler width is discussed and the influence of the large Doppler broadening in the flame causes the lineshape to be close to a Lorentzian. By fitting the data to the DFWM moving absorber model, we found that the collisional linewidth (0.1136 cm -1) for the transition was larger than other reported values for a different vibrational band of this molecule; the reason for that is discussed.
AB - An experiment on high-resolution degenerate four wave mixing (DFWM) spectroscopy is performed at an unsaturated laser power and in a backward geometry. The lineshape and line broadening of the DFWM signal of the OH radical [(1,0) Q 2(11) rotational line in X 2II↔A 2∑] were measured in a propane/air premixed flame. The lineshape dependence on the relative magnitude of the collisional linewidth and the Doppler width is discussed and the influence of the large Doppler broadening in the flame causes the lineshape to be close to a Lorentzian. By fitting the data to the DFWM moving absorber model, we found that the collisional linewidth (0.1136 cm -1) for the transition was larger than other reported values for a different vibrational band of this molecule; the reason for that is discussed.
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M3 - Article
VL - 35
SP - 57
EP - 62
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 2
ER -