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Two-Dimensional Collimation of an Atomic Beam in a Diffuse Light Field

LI Foshe

Abstract

Here we report the theory of laser cooling and collimation of an atomic beam ina diffuse light field. The experimental results of two-dimensional collimation of the atomicbeam using a nearly resonant red-shifted diffuse light field are given. The transverse equivalent temperature of the atomic beam has been reduced from 556μk to 313μk by diffuse lightfield. With this mechanism, a two dimensional collimated atomic beam can be obtained.

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Key concepts: Collimated light, Light field, Atomic beam, Optics, Field (mathematics), Beam (structure), Transverse plane, Physics