Buffer-gas induced absorption resonances in Rb vapor

Details Buffer-gas induced absorption resonances in Rb vapor Buffer-gas induced absorption resonances in Rb vapor

2003-09-23

arxiv.org/abs/quant-ph/0309171v2

Phys. Rev. A 70, 033806 (2004)

Physics

Quantum Physics

11 pages, 15 figures; 13 pages, 17 figures, added numerical simulation

Scientific paper

10.1103/PhysRevA.70.033806

We observe transformation of the electromagnetically induced transparency (EIT) resonance into the absorption resonance in a $\Lambda$ interaction configuration in a cell filled with $^{87}$Rb and a buffer gas. This transformation occurs as a one-photon detuning of the coupling fields is varied from the atomic transition. No such absorption resonance is found in the absence of a buffer gas. The width of the absorption resonance is several times smaller than the width of the EIT resonance, and the changes of absorption near these resonances are about the same. Similar absorption resonances are detected in the Hanle configuration in a buffered cell.

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