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May 31, 2026Applied Physics Letters

Precise control of launch velocity vector for cold atomic cloud based on moving optical molasses

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Authors

YLYao LiShanghai Institute of Optics and Fine MechanicsZLZhiyi LiuShanghai Institute of Optics and Fine MechanicsYHYu HuChinese Academy of Sciences

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Implication

Randomized trial demonstrates precise control of atomic launch direction in cold atomic clouds, suggesting simpler methods for calibration.

Key Points

  • This research aims to develop a method for controlling the launch velocity vector of cold atomic clouds more accurately.
  • Independently adjusted the relative detuning of three pairs of orthogonal counter-propagating laser beams.
  • Conducted experimental verification using an 87Rb atomic fountain clock.
  • Evaluated spatial distribution via horizontal velocity scanning and corrected tilt deviation.
  • Achieved launch direction angles less than 0.1 mrad compared to the central axis.
  • Velocity fluctuation under 3% laser power resulted in long-term instability of 62 μm/s over 5000 s.
  • Demonstrated significant application potential for cold atomic precision instruments.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a1bd1f65783ba022b6fd6aehttps://doi.org/10.1063/5.0333698
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