Enhancement of Kerr nonlinearity via multi-photon coherence
A. B. Matsko, I. Novikova, G. R. Welch, M. S. Zubairy
Abstract
We propose a new method of resonant enhancement of optical Kerr nonlinearity using multi-level atomic coherence. The enhancement is accompanied by suppression of the other linear and nonlinear susceptibility terms of the medium. We show that the effect results in a modification of the nonlinear Faraday rotation of light propagating in an Rb87 vapor cell by changing the ellipticity of the light.
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