Sideband-Induced Two-Photon Transparency
Cheng Guang-Ling; Hu Xiang-Ming; Cheng Guang-Ling; Department of Physics, Huazhong Normal University, Wuhan 430079; Hu Xiang-Ming; Department of Physics, Huazhong Normal University, Wuhan 430079
Журнал:
Chinese Physics Letters
Дата:
2006-08-01
Аннотация:
We show that it is possible to use a single sideband to induce two-photon transparency in a three-level cascade medium. The medium simultaneously absorbs two photons as a one-step process when the middle level is far off one-photon resonance. A resonant sideband coupling on the upper transition and the two-photon one-step process drive the medium into a trapped state, and the dominant component is the ground state. Thus almost all population is trapped in the ground state and the two-photon absorption is dramatically suppressed. We present a numerical calculation for arbitrary values of the atomic and field parameters and also provide an analytic description for the required conditions.
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