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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 7 — Mar. 31, 2008
  • pp: 4747–4752

Arbitrarily copropagating superluminal and slow light by controllable one-photon detuning in trapped cold atoms

Yanting Zhao, Jie Ma, Xianli Zhang, Lirong Wang, Liantuan Xiao, and Suotang Jia  »View Author Affiliations

Optics Express, Vol. 16, Issue 7, pp. 4747-4752 (2008)

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Absorption spectra of cold cesium atoms confined in a magneto-optical trap are observed around the D2 transition line (6S1/2, F=4→6P3/2, F’=5) with the probe laser frequency detuned near the trapping laser frequency. We observe the dispersion-like profile resulted from the stimulated Raman processes with the sub-natural linewidth, and study the behavior of the group velocity of light in trapped cold atoms. By only changing the blue and red detuning of the probe frequency from the trapping laser frequency, we are able to arbitrarily control the speed of a light pulse from subluminal to superluminal velocity.

© 2008 Optical Society of America

OCIS Codes
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(270.1670) Quantum optics : Coherent optical effects
(270.5530) Quantum optics : Pulse propagation and temporal solitons
(290.5910) Scattering : Scattering, stimulated Raman

ToC Category:
Slow and Fast Light

Original Manuscript: January 25, 2008
Revised Manuscript: March 10, 2008
Manuscript Accepted: March 10, 2008
Published: March 24, 2008

Yanting Zhao, Jie Ma, Xianli Zhang, Lirong Wang, Liantuan Xiao, and Suotang Jia, "Arbitrarily copropagating superluminal and slow light by controllable one-photon detuning in trapped cold atoms," Opt. Express 16, 4747-4752 (2008)

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