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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21614–21619

Intensity-dependent effects on four-wave mixing based on electromagnetically induced transparency

Gang Wang, Lin Cen, Yi Qu, Yan Xue, Jin-Hui Wu, and Jin-Yue Gao  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21614-21619 (2011)

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We extend the study on a four-wave mixing (FWM) scheme of contiuous-wave lasers in a hot rubidium vapor when the probe and coupling fields work in the electromagnetically induced transparency (EIT) regime while the pump and signal fields work in the two-photon Raman regime. Our experimental results show that the generated signal field is well contained in an EIT dip of the incident probe field as a result of efficient FWM. We find, in particular, that an optimal FWM process can only be attained when the coupling and pump fields are well matched in intensity. If the probe intensity is far beyond the EIT condition, however, the nonlinear efficiency of energy transfer from the probe field to the signal field will be greatly reduced.

© 2011 OSA

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.4180) Quantum optics : Multiphoton processes

ToC Category:
Nonlinear Optics

Original Manuscript: August 23, 2011
Revised Manuscript: September 13, 2011
Manuscript Accepted: September 13, 2011
Published: October 18, 2011

Gang Wang, Lin Cen, Yi Qu, Yan Xue, Jin-Hui Wu, and Jin-Yue Gao, "Intensity-dependent effects on four-wave mixing based on electromagnetically induced transparency," Opt. Express 19, 21614-21619 (2011)

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