Cold atom Raman spectrography using velocity-selective resonances.
Opt Express
; 17(15): 12971-80, 2009 Jul 20.
Article
in En
| MEDLINE
| ID: mdl-19654701
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 ( approximately 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.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Rubidium
/
Spectrum Analysis, Raman
/
Optics and Photonics
/
Interferometry
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2009
Document type:
Article
Affiliation country:
Country of publication: