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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 8, Iss. 8 — Aug. 1, 2010
  • pp: 795–799

Enhancement of nonlinear susceptibility in a four-level tripod scheme

Xiang'an Yan, Liqiang Wang, Baoyin Yin, and Jianping Song  »View Author Affiliations

Chinese Optics Letters, Vol. 8, Issue 8, pp. 795-799 (2010)

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We propose a scheme for the enhancement of nonlinear susceptibility in a four-level tripod-type atomic system in the presence of a microwave field. With a microwave field, nonlinear susceptibility can be enhanced. Nonlinearity can also be ulteriorly enhanced by controlling the coupling field under the optimal intensity of the microwave field. The physical mechanism of the obtained giant nonlinear susceptibility is mainly based on interactions between microwave field and coupling fields. We present a physical understanding of our numerical results using a dressed-state approach and an analytical explanation.

© 2010 Chinese Optics Letters

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(270.1670) Quantum optics : Coherent optical effects
(270.6620) Quantum optics : Strong-field processes

Xiang'an Yan, Liqiang Wang, Baoyin Yin, and Jianping Song, "Enhancement of nonlinear susceptibility in a four-level tripod scheme," Chin. Opt. Lett. 8, 795-799 (2010)

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