Abstract
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 A-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.
Original language | English (US) |
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Pages (from-to) | 953-959 |
Number of pages | 7 |
Journal | Journal of Experimental and Theoretical Physics |
Volume | 98 |
Issue number | 5 |
DOIs | |
State | Published - May 2004 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy