The frequency of the dark resonance in coherent population trapping experiments has been measured as a function of the degree of ellipticity and the intensity of the probe light. The results have been used to find the quantum limit of sensitivity of an optical magnetometer based on the nonlinear Faraday effect.
© 2000 Optical Society of America
(020.6580) Atomic and molecular physics : Stark effect
(020.7490) Atomic and molecular physics : Zeeman effect
(140.0140) Lasers and laser optics : Lasers and laser optics
(230.2240) Optical devices : Faraday effect
(270.0270) Quantum optics : Quantum optics
I. Novikova, A. B. Matsko, V. A. Sautenkov, V. L. Velichansky, G. R. Welch, and M. O. Scully, "Ac-Stark shifts in the nonlinear Faraday effect," Opt. Lett. 25, 1651-1653 (2000)