Journal ArticleDOI
Improvement of spectral resolution by using the excitation dependence of dipole–dipole interaction in a dense atomic gas
Hebin Li,T. Varzhapetyan,V.A. Sautenkov,V.A. Sautenkov,Yuri V. Rostovtsev,Hui Chen,David Sarkisyan,Marlan O. Scully,Marlan O. Scully +8 more
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In this article, the authors studied the selective reflection from the interface between a dense rubidium (Rb) atomic vapor and a transparent dielectric, which can be used to improve the resolution of spectroscopy of dense media.Abstract:
We have studied the selective reflection from the interface between a dense rubidium (Rb) atomic vapor and a transparent dielectric. A remarkable narrowing of the spectrum, which can be used to improve the resolution of spectroscopy of dense media, has been demonstrated. This narrowing results from the reduction of the dipole–dipole interaction between atoms when the Rb vapor is excited by a strong pump laser. By using this technique, we have resolved the hyperfine structure of the Rb D2 line, which is hidden by collisional broadening.read more
Citations
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Probing dipole-dipole interaction in a rubidium gas via double-quantum 2D spectroscopy.
TL;DR: This technique provides sensitive and background-free detection of the dipole-dipole interaction and a theoretical model based on the optical Bloch equations is used to reproduce the experimental spectrum and confirm the origin of doublequantum signals.
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Long range dipole-dipole interaction in low-density atomic vapors probed by double-quantum two-dimensional coherent spectroscopy.
TL;DR: The experimental results confirm the long range nature of the dipole-dipole interaction, which is critical for understanding many-body physics in atoms/molecules and can open a new avenue to study long-range interactions in solid state systems such as quantum dots and color centers in diamonds.
Journal ArticleDOI
Observation of narrow Autler-Townes components in the resonant response of a dense atomic gas
TL;DR: In this article, the reflection of a weak probe beam from a dense atomic potassium vapor in the presence of a strong laser field tuned to the atomic resonance transition was studied under the Autler-Townes doublet condition.
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Line shapes of atomic transitions in excited dense gas
V.A. Sautenkov,V.A. Sautenkov +1 more
TL;DR: In this article, the authors discussed the results of experimental studies of dipole-dipole broadened line shapes in excited atomic vapors and the Lorentz local field shift and self-broadened width were measured in optically excited potassium and rubidium vapors.
Journal ArticleDOI
Excitation dependence of resonance line self-broadening at different atomic densities
TL;DR: In this article, the authors studied the dipole?dipole spectral broadening of a resonance line at high atomic densities when the self-broadening dominates, and found that the selfbroadening reduction dependence on the pump power is atomic density independent.
References
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TL;DR: Electromagnetic induced transparency is a technique for eliminating the effect of a medium on a propagating beam of electromagnetic radiation EIT may also be used, but under more limited conditions, to eliminate optical self-focusing and defocusing and to improve the transmission of laser beams through inhomogeneous refracting gases and metal vapors, as figure 1 illustrates.
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