HIGH-RESOLUTION DEGENERATE 4-WAVE-MIXING SPECTRAL PROFILES OF OH

被引:28
作者
BROWN, MS [1 ]
RAHN, LA [1 ]
DREIER, T [1 ]
机构
[1] PHYS CHEM INST, W-6900 HEIDELBERG 1, GERMANY
关键词
D O I
10.1364/OL.17.000076
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
High-resolution degenerate four-wave mixing spectra of the R1(9) A2-SIGMA+ --> X2-PI(0,0) transition of OH have been measured in a hydrogen/oxygen flame at atmospheric pressure where the Doppler and homogeneous linewidths are of comparable magnitude. The observed sub-Lorentzian Doppler-free line profile is fit well by existing perturbative models by using homogeneous broadening consistent with two-photon absorption measurements. Power broadening of the spectral profile with increasing pump-beam intensity was observed and is compared with predictions from a nonperturbative two-level model.
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页码:76 / 78
页数:3
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