Coulomb broadening of the peak of electromagnetically induced transparency in plasma

被引：0
|
作者：
S. A. Babin
M. G. Stepanov
D. V. Churkin
D. A. Shapiro
机构：
[1] Russian Academy of Sciences,Institute of Automation and Electrometry, Siberian Division
来源：
Journal of Experimental and Theoretical Physics | 2004年 / 98卷
关键词：
Spectroscopy; State Physics; Field Theory; Elementary Particle; Quantum Field Theory;
D O I：
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学科分类号：
摘要：
We have measured the shape of the Autler-Townes doublet and the peak of electromagnetically induced transparency (EIT) under plasma conditions. We compare the experimental results with the calculated spectrum of the probe field of a three-level ArII Λ-scheme by taking into account Coulomb collisions. We show that the Coulomb broadening of the EIT peak is small (less than 40%), while the saturation resonance is broadened under the experimental conditions by a factor of 3. In contrast to the saturation resonance attributable to the Bennett dip in the velocity distribution of the population, the EIT peak is a coherent effect and is broadened mainly through Coulomb dephasing.
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页码：953 / 959
页数：6
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