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Cooling and trapping of neutral atoms

TLDR
In this paper, a review of the techniques for laser cooling and trapping of neutral atoms are described. But it was not until the 1980's that optical momentum transfer was used to cool and trap neutral atoms.
Abstract
Abstract As early as 1917, Einstein had predicted that momentum is transferred in the absorption and emission of light, but it was not until the 1980's that such optical momentum transfer was used to cool and trap neutral atoms. By properly tuning laser light close to atomic transitions, atomic samples can be cooled to extremely low temperatures, the brightness of atomic beams can be enhanced to unprecedented values, and atoms can be manipulated with extraordinary precision. In this review several of the techniques for laser cooling and trapping of neutral atoms are described.

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Citations
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Simple scheme for tunable frequency offset locking of two lasers

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References
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Journal ArticleDOI

Trapping of neutral sodium atoms with radiation pressure

TL;DR: The confinement and cooling of an optically dense cloud of neutral sodium atoms by radiation pressure was reported, provided by three retroreflected laser beams propagating along orthogonal axes, with a weak magnetic field used to distinguish between the beams.
Journal ArticleDOI

The effect of collisions upon the Doppler width of spectral lines

TL;DR: In this article, the Doppler effect results from the recoil momentum changing the translational energy of the radiating atom, and it is shown that the assumption that recoil momentum is given to the radii is incorrect if collisions are taking place.
Journal ArticleDOI

Atomic interferometry using stimulated Raman transitions

TL;DR: The mechanical effects of stimulated Raman transitions on atoms have been used to demonstrate a matter-wave interferometer with laser-cooled sodium atoms that has observed interference for wave packets that have been separated by as much as 2.4 mm.
Journal ArticleDOI

Laser cooling below the Doppler limit by polarization gradients: simple theoretical models

TL;DR: In this article, two cooling mechanisms based on laser polarization gradients are presented, which lead to temperatures well below the Doppler limit, and they work at low laser power when the optical-pumping time between different ground-state sublevels becomes long.
Journal ArticleDOI

Cooling of gases by laser radiation

TL;DR: In this article, it was shown that a low-density gas can be cooled by illuminating it with intense, quasi-monochromatic light confined to the lower-frequency half of a resonance line's Doppler width.
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