https://doi.org/10.1140/epjd/e2007-00048-2
Spontaneously generated coherence in a Doppler broadened atomic system
1
Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education (Jilin University), Changchun, 130023, P.R. China
2
College of Physics, Jilin University, Changchun, 130023, P.R. China
Corresponding author: a liaijun0405@126.com
Received:
14
November
2006
Revised:
25
December
2006
Published online:
7
March
2007
We investigate the spontaneously generated coherence (SGC) in a Doppler broadened four-level atomic system driven by two coherent fields. We plot the spontaneous emission spectra with different parameters and discuss how the initial atomic conditions and parameters of both fields change the number of peaks and dark lines of spontaneous emission spectra. Furthermore, we also show how the spontaneous emission spectrum is modified by Doppler effects in the viewed direction. Our results have important references to the experimental observation of SGC in hot atomic vapors.
PACS: 32.80.Qk – Coherent control of atomic interactions with photons / 32.50.+d – Fluorescence, phosphorescence (including quenching) / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
