Construction of an atomic funnel for a slow, high density atomic beam

E. Riis, David Scott Weiss, K. A. Moler, S. Chu

Research output: Contribution to conferencePaperpeer-review


The deceleration and cooling of as large a fraction as possible of the atoms from a thermal beam without serious loss of density has been addressed. By combining a number of techniques known from laser cooling and trapping of atoms a beam of Na atoms with a density exceeding that of a thermal beam and a tunable velocity of 1-5 m/s has been produced. The temperature of the beam was measured to be approximately 170 μK, corresponding to an rms velocity spread of <45 cm/s. The basic idea of the design is an extended 2-D magnetooptic trap with a drift velocity along the axis. Atoms originating from a thermal source and slowed by a frequency chirped laser beam are continuously guided by this trap into a region of optical molasses. Slight imbalances in the intensity of the molasses beams provide a very accurate control of the direction of the slow atomic beam.

Original languageEnglish (US)
Number of pages2
StatePublished - Dec 1 1990
Event17th International Conference on Quantum Electronics - IQEC '90 - Anaheim, CA, USA
Duration: May 21 1990May 25 1990


Other17th International Conference on Quantum Electronics - IQEC '90
CityAnaheim, CA, USA

All Science Journal Classification (ASJC) codes

  • General Engineering


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