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Probe Amplification with or without Population Inversion in a Five-Level Atomic System with Double-Dark Resonances |
| LI Jia-Hua;XIE Xiao-Tao;LUO Jin-Ming;LIU Ji-Bing |
| Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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LI Jia-Hua, XIE Xiao-Tao, LUO Jin-Ming et al 2006 Chin. Phys. Lett. 23 612-615 |
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Abstract We theoretically investigate the response of the probe amplification in a five-level atomic system in the presence of interacting double-dark resonances disturbed by introducing an additional signal field. It is found that a large enhancement of the probe amplification with or without population inversion can be achieved by properly adjusting the strengths of the microwave driving field and the signal laser field. From viewpoint of physics, we qualitatively explain these results in terms of quantum interference and dressed states.
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| Keywords:
42.50.Gy
42.50.Hz
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Published: 01 March 2006
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| PACS: |
42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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