Enhancement of Kerr nonlinearity with vanishing absorption in a tripod scheme |
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| Authors: | Sun Hui Niu Yue-Ping and Gong Shang-Qing |
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| Institution: | State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | The giant enhancement of Kerr nonlinearity in a four-level tripod
type system is investigated theoretically. By tuning the value of
the Rabi frequency of the coherent control field, owing to the
double dark resonances, the giant-enhanced Kerr nonlinearity can be
achieved within the right transparency window. The influence of
Doppler broadening is also discussed. |
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| Keywords: | Kerr nonlinearity dark
resonance transparency window Doppler broadening |
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