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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/39
- Enhanced atomic Kerr nonlinearity in bright coherent states
- Akulshin, Alexander M.; Sidorov, Andrei I.; McLean, Russell J.; Hannaford, Peter
- We show that long-lived bright Zeeman coherence that is responsible for absorption enhancement and steep anomalous dispersion in an atomic medium gives rise to a giant nonlinearity of the atomic susceptibility, in a similar manner to the dark coherence responsible for the well-known electromagnetically induced transparency. The intensity dependent refractive index of Cs vapour with a ground state Zeeman coherence in the vicinity of the D2 resonance line has been measured at low light intensity. The Kerr nonlinearity in the bright coherent state (n2 approx 1.0 × 10-6 cm2 mW-1) is higher than that in a dark state under the same experimental conditions. Higher order nonlinear components of the refractive index have also been estimated for both coherent states.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. School of Biophysical Sciences and Electrical Engineering. Centre for Atom Optics and Ultrafast Spectroscopy
- Journal of Optics B: Quantum and Semiclassical Optics, Vol. 6 (2004), pp. 491-494
- Publication year
- Kerr nonlinearity; Anomalous dispersion; Electromagnetically induced absorption; Electromagnetically induced transparency
- Institute of Physics Publishing
- Publisher URL
- Copyright © 2004 IOP Publishing Ltd.
- Peer reviewed