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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 10 — May. 15, 2007
  • pp: 1244–1246

High-contrast coherent population trapping resonances using four-wave mixing in Rb 87

V. Shah, S. Knappe, L. Hollberg, and J. Kitching  »View Author Affiliations


Optics Letters, Vol. 32, Issue 10, pp. 1244-1246 (2007)
http://dx.doi.org/10.1364/OL.32.001244


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Abstract

We demonstrate very high-contrast coherent population trapping[1] (CPT) resonances by using four-wave mixing in Rb 87 atoms. In the experiment, we take advantage of the spectral overlap between F = 2 F and F = 3 F optical resonances on the D 1 line of Rb 87 and Rb 85 atoms, respectively, to eliminate the DC-light background from the CPT resonance signal. We observe a CPT resonance with a contrast in the range of 90%, compared with a few percent achieved by alternative methods.

© 2007 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(120.3940) Instrumentation, measurement, and metrology : Metrology

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: December 18, 2006
Revised Manuscript: February 20, 2007
Manuscript Accepted: February 21, 2007
Published: April 17, 2007

Citation
V. Shah, S. Knappe, L. Hollberg, and J. Kitching, "High-contrast coherent population trapping resonances using four-wave mixing in 87Rb," Opt. Lett. 32, 1244-1246 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-10-1244


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