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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 15 — Jul. 20, 2009
  • pp: 12971–12980

Cold atom Raman spectrography using velocity-selective resonances

Fredrik K. Fatemi, Matthew L. Terraciano, Mark Bashkansky, and Zachary Dutton  »View Author Affiliations

Optics Express, Vol. 17, Issue 15, pp. 12971-12980 (2009)

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We have studied velocity-selective resonances in the presence of a uniform magnetic field and shown how they can be used for rapid, single-shot assessment of the ground state magnetic sublevel spectrum in a cold atomic vapor. Cold atoms are released from a magneto-optical trap in the presence of a small bias magnetic field (≈300 mG) and exposed to a laser field comprised of two phase-locked counterpropagating beams connecting the two ground state hyperfine manifolds. An image of the expanded cloud shows the velocity-selected resonances as distinct features, each corresponding to specific magnetic sublevel, in a direct, intuitive manner. We demonstrate the technique with both 87Rb and 85Rb, and show the utility of the technique by optically pumping into particular magnetic sublevels. The results are shown to agree with a theoretical model, and are compared to traditional Raman spectroscopy.

© 2009 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(300.6450) Spectroscopy : Spectroscopy, Raman
(020.3320) Atomic and molecular physics : Laser cooling

ToC Category:
Atomic and Molecular Physics

Original Manuscript: June 1, 2009
Revised Manuscript: July 3, 2009
Manuscript Accepted: July 4, 2009
Published: July 14, 2009

Fredrik K. Fatemi, Matthew L. Terraciano, Mark Bashkansky, and Zachary Dutton, "Cold atom Raman spectrography using velocity-selective resonances," Opt. Express 17, 12971-12980 (2009)

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