Two-Photon Atomic Coherence Effect of Transition 5S1/2–5P3/2–4D5/2(4D3/2) of 85Rb atoms

Two-Photon Atomic Coherence Effect of Transition 5S_1/2–5P_3/2–4D_5/2(4D_3/2) of ⁸⁵Rb atoms

Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026

Received Date: October 07, 2011

Revised Date: December 31, 1899

Published Date: January 31, 2012

Abstract

We experimentally observe the counterintuitive absorption peaks in the transition spectra of 5S_1/2–5P_3/2–4D_5/2 and 5S_1/2–5P_3/2–4D_3/2 in a hot ⁸⁵Rb vapor. These spectra are very different from the spectra observed via double resonance optical pumping or electromagnetically induced transparency in the same transitions. These absorption peaks are from electromagnetically induced absorption due to the two-photon atomic coherence effect. We also investigate the relations between these peaks and the powers of the coupling laser and the probe laser experimentally.

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