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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 11944–11952

Background-free fluorescence detection of cold atoms in a two-color magneto-optical trap

Baodong Yang, Qiangbing Liang, Jun He, and Junmin Wang  »View Author Affiliations


Optics Express, Vol. 20, Issue 11, pp. 11944-11952 (2012)
http://dx.doi.org/10.1364/OE.20.011944


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Abstract

A two-color magneto-optical trap (MOT) for trapping cesium (Cs) atoms is experimentally realized. This two-color MOT employs the radiation forces due to photon scattering from the Cs 6P3/2 F’ = 5 - 8S1/2 F” = 4 excited-state transition, which replaced one pair of the three pairs of cooling/trapping laser beams operating on a single-photon red detuning to the Cs 6S1/2 F = 4 - 6P3/2 F’ = 5 cycling transition in a standard six-beam Cs MOT, and can cool and trap atoms on both the red-detuning and blue-detuning sides of the two-photon resonance. Employing the two-color MOT, the background-free fluorescence detection of trapped atoms has been demonstrated. This technique will be useful for observation of weak fluorescence signal radiated from single atoms in MOT.

© 2012 OSA

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(270.1670) Quantum optics : Coherent optical effects
(020.3320) Atomic and molecular physics : Laser cooling

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: April 2, 2012
Revised Manuscript: May 8, 2012
Manuscript Accepted: May 8, 2012
Published: May 10, 2012

Citation
Baodong Yang, Qiangbing Liang, Jun He, and Junmin Wang, "Background-free fluorescence detection of cold atoms in a two-color magneto-optical trap," Opt. Express 20, 11944-11952 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-11-11944


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