Optical Stern-Gerlach effect from the Zeeman-like ac Stark shift

Chang Yong Park, Ji Young Kim, Jong Min Song, Donghyun Cho

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We report a different type of optical Stern-Gerlach effect, where a magnetic-field gradient is replaced with a light-intensity gradient and a paramagnetic atom is deflected according to its magnetic quantum number. The laser light is detuned between the [Formula Presented] and [Formula Presented] frequencies, with the size of the detuning from the [Formula Presented] resonance being twice that from the [Formula Presented] resonance, and it is circularly polarized to produce an ac Stark shift that takes the form of a pure Zeeman shift. Slow rubidium atoms are extracted from a magneto-optical trap and then spin polarized. The atoms traversing the laser-intensity gradient on one side of the Gaussian beam profile show deflections that depend on the atomic spin state and the laser polarization. When the laser-beam axis is aligned with the slit that defines the atomic beam, we observe focusing and defocusing of the atomic beam.

Original languageEnglish
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
Publication statusPublished - 2002 Jan 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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