摘要We investigate the Kerr nonlinearity of a V-type three-level atomic system where the upper two states decay outside to another state and hence spontaneous generated coherence may exist. It is shown that dark state and hence perfect transparency present under certain conditions. Meanwhile, the Kerr nonlinearity can be controlled by manipulation of the decay rates and the splitting of the two excited states. Therefore, enhanced Kerr nonlinearity without absorption can be obtained under proper parameters.
Abstract：We investigate the Kerr nonlinearity of a V-type three-level atomic system where the upper two states decay outside to another state and hence spontaneous generated coherence may exist. It is shown that dark state and hence perfect transparency present under certain conditions. Meanwhile, the Kerr nonlinearity can be controlled by manipulation of the decay rates and the splitting of the two excited states. Therefore, enhanced Kerr nonlinearity without absorption can be obtained under proper parameters.
(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
引用本文:
NIU Yue-Ping;GONG Shang-Qing;LI Ru-Xin;XU Zhi-Zhan. Controllable Kerr Nonlinearity with Perfect Transparency in the Existence of Spontaneously Generated Coherence[J]. 中国物理快报, 2008, 25(2): 540-543.
NIU Yue-Ping, GONG Shang-Qing, LI Ru-Xin, XU Zhi-Zhan. Controllable Kerr Nonlinearity with Perfect Transparency in the Existence of Spontaneously Generated Coherence. Chin. Phys. Lett., 2008, 25(2): 540-543.
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