Absorption Changes Induced by Off-Resonance Driving a Degenerate Two-Level System |
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| Authors: | CAI Jin ZHOU Hai-Tao WANG Wen-Qi LI Zhong-Hua LI Tao ZHANG Jun-Xiang |
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| Affiliation: | The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 |
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| Abstract: | The alteration of atomic absorption via quantum coherence is observed in the degenerate two-level atomic system. It is shown that when the detuning of coupling field equals to that of probe light, i.e. two-photon resonance, the reduction of atomic absorption via electromagnetically induced transparencyoccurs. However, when we tune the coupling field to two-photon off-resonance, the enhancement of absorption is obtained for the probe field. The influences of one-photon detuning and intensity of coupling field on absorption are also experimentally demonstrated. |
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| Keywords: | 42 50 Gy 32 80 Qk |
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