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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 12 — Jun. 15, 2007
  • pp: 1755–1757

Time-resolved probing of the ground state coherence in rubidium

Martin Oberst, Frank Vewinger, and A. I. Lvovsky  »View Author Affiliations


Optics Letters, Vol. 32, Issue 12, pp. 1755-1757 (2007)
http://dx.doi.org/10.1364/OL.32.001755


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Abstract

We demonstrate the preparation and probing of the coherence between the hyperfine ground states 5 S 1 2 , F = 1 and 5 S 1 2 , F = 2 of the Rb 87 isotope. The effects of various coherence control techniques, i.e., fractional stimulated Raman adiabatic passage and coherent population return, on the coherence are investigated. These techniques are implemented using nearly degenerate pump and Stokes lasers at 795 nm (Rb D 1 transition), which couple the two hyperfine ground states via the excited state 5 P 1 2 , F = 1 through a resonant two-photon process in which a coherent superposition of the two hyperfine ground states is established. The medium is probed by an additional weak laser, which generates a four-wave mixing signal proportional to the ground state coherence and allows us to monitor its evolution in time. The experimental data are compared with numerical simulations.

© 2007 Optical Society of America

OCIS Codes
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.1670) Quantum optics : Coherent optical effects
(300.6210) Spectroscopy : Spectroscopy, atomic

ToC Category:
Spectroscopy

History
Original Manuscript: January 25, 2007
Revised Manuscript: April 4, 2007
Manuscript Accepted: April 24, 2007
Published: June 13, 2007

Citation
Martin Oberst, Frank Vewinger, and A. I. Lvovsky, "Time-resolved probing of the ground state coherence in rubidium," Opt. Lett. 32, 1755-1757 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-12-1755


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