Electromagnetically induced absorption in quasi-degenerate two-level doppler broadened atomic system

C. Y. Ye Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, Texas, 77843, USA; Institute of Optics and Physics Department, Zhejiang University, Hangzhou, 310028, China

A. S. Zibrov Physics Department, Harvard University, Cambridge, MA, 02138, USA

Y. V. Rostovtsev Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, Texas, 77843, USA

M. O. Scully Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, Texas, 77843, USA; Department of Chemistry, Princeton University, New Jersey, 08544, USA

Abstract

We report, in this paper, a narrow dip of electromagnetically induced absorption inside the optical pumping window by the interaction of two coherent laser fields with a quasi-degenerate two-level open atomic system in inhomogeneously broadened Rb vapour. The effect arises from optical pumping and laser-induced atomic multilevel Zeeman sublevels in the same ground state. The numerical simulation for a N-type four-level system shows good agreement with experimental observation.

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Electromagnetically induced absorption in quasi-degenerate two-level doppler broadened atomic system

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Electromagnetically induced absorption in quasi-degenerate two-level doppler broadened atomic system

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