Phys. Rev. Lett. 89, 283001 (2002) [4 pages]

Observation of Cumulative Spatial Focusing of Atoms

Abstract

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Windell H. Oskay^*, Daniel A. Steck^†, and Mark G. Raizen^‡
Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1081

Received 8 July 2002; published 26 December 2002

We report an experimental study of the spatial distribution of ultracold cesium atoms exposed to a series of kicks from a standing wave of light. We observe cumulative focusing, leading to a spatial array of atoms which is of interest for atomic lithography. To observe the spatial distribution, we developed a free-space measurement technique that enables the reconstruction of the atomic motion as a function of time. We find increased focusing of atoms after as many as ten kicks, and the results are in good agreement with theoretical predictions.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.89.283001

DOI:

10.1103/PhysRevLett.89.283001

PACS:

32.80.Pj, 42.50.Vk

^*Present address: National Institute of Standards and Technology, Time and Frequency Division, MS 847, 325 Broadway, Boulder, CO 80305.

^†Present address: Los Alamos National Laboratory, Theoretical Division (T-8), MS B285, Los Alamos, NM 87545.

^‡Electronic address: raizen@physics.utexas.edu

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Phys. Rev. Lett. 89, 283001 (2002) [4 pages]

Observation of Cumulative Spatial Focusing of Atoms