Dependence of enhanced Kerr nonlinearity on coupling power in a three-level atomic system.

  title={Dependence of enhanced Kerr nonlinearity on coupling power in a three-level atomic system.},
  author={Hai Wang and David Goorskey and Min Xiao},
  journal={Optics letters},
  volume={27 4},
We study the enhanced Kerr-nonlinear coefficient in a three-level A-type atomic system for various coupling-beam powers. The Kerr-nonlinear coefficient behaves very differently in the strong and the weak coupling power regions and changes sign when the coupling or probe frequency detuning changes sign. Comparisons of Kerr-nonlinear coefficients as functions of probe frequency detuning, coupling power, and coupling frequency detuning are presented. 
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