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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry Van Driel
  • Vol. 26, Iss. 7 — Jul. 1, 2009
  • pp: 1423–1434

Enhanced cross-Kerr nonlinearity via electromagnetically induced transparency in a four-level tripod atomic system

Xudong Yang, Shujing Li, Chunhong Zhang, and Hai Wang  »View Author Affiliations


JOSA B, Vol. 26, Issue 7, pp. 1423-1434 (2009)
http://dx.doi.org/10.1364/JOSAB.26.001423


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Abstract

We investigate, both theoretically and experimentally, the cross-Kerr nonlinearity generated in a four-level tripod system in the 87Rb D1 line. The system exhibits simultaneous electromagnetically induced transparency (EIT) windows for two weak (probe and trigger) fields and the enhanced cross-Kerr nonlinearity by EIT. The cross-Kerr nonlinear phase shifts for probe (trigger) field are measured at several different intensities of trigger (probe) field. The results show that large cross-phase modulation (XPM) coefficients can be achieved at low light intensities.

© 2009 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(030.1640) Coherence and statistical optics : Coherence
(190.3270) Nonlinear optics : Kerr effect
(270.1670) Quantum optics : Coherent optical effects
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Nonlinear Optics

History
Original Manuscript: February 10, 2009
Revised Manuscript: April 24, 2009
Manuscript Accepted: April 27, 2009
Published: June 24, 2009

Citation
Xudong Yang, Shujing Li, Chunhong Zhang, and Hai Wang, "Enhanced cross-Kerr nonlinearity via electromagnetically induced transparency in a four-level tripod atomic system," J. Opt. Soc. Am. B 26, 1423-1434 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-7-1423

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