Observation of Raman self-focusing in an alkali-metal vapor cell

Observation of Raman self-focusing in an alkali-metal vapor cell

We report an experimental demonstration of Raman self-focusing and self-defocusing in a far-off resonant alkali-metal atomic system. The key idea is to drive a hyperfine transition in an alkali-metal atom to a maximally coherent state with two laser beams. In this regime, the two-photon detuning fro...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2008-02, Vol.77 (2), Article 023819
Hauptverfasser: Proite, N. A., Unks, B. E., Green, J. T., Yavuz, D. D.
Format: Artikel
Sprache:eng
Schlagworte:
ALKALI METALS
ATOMIC AND MOLECULAR PHYSICS
ATOMS
BEAMS
CONTROL
EIGENSTATES
FOCUSING
HYPERFINE STRUCTURE
LASER RADIATION
NONLINEAR PROBLEMS
OPTICS
PHOTONS
RAMAN EFFECT
RESONANCE
VAPORS
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Beschreibung
Zusammenfassung:We report an experimental demonstration of Raman self-focusing and self-defocusing in a far-off resonant alkali-metal atomic system. The key idea is to drive a hyperfine transition in an alkali-metal atom to a maximally coherent state with two laser beams. In this regime, the two-photon detuning from the Raman resonance controls the nonlinear index of the medium.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.77.023819