Precision measurements using laser cooled atoms

S. Chu, M. Kasevich, K. Moler, E. Riis, David Scott Weiss

Research output: Contribution to journalConference articlepeer-review


A number of experimental applications of laser cooling of neutral atoms are described. In an experiment on atomic fountains, laser-cooled atoms pushed up on a vertical trajectory by radiation pressure were observed to turn around due to gravity. A compact cesium fountain that would give three to four orders of magnitude increase in the counting rate over the first experiment can be designed, and the trapping and cooling can be done with diode lasers, suggesting a practical clock. In order to increase the time-averaged flux of such a fountain and also create a continuous fountain, an atomic funnel that can produce an atomic beam of very low velocity (approximately 270 cm/s) at densities of 108 atoms/cm2 has been devised.

Original languageEnglish (US)
Pages (from-to)5-6
Number of pages2
JournalCPEM Digest (Conference on Precision Electromagnetic Measurements)
StatePublished - Jun 1 1990
Event1990 Conference on Precision Electromagnetic Measurements - Ottawa, Ont, Can
Duration: Jun 11 1990Jun 14 1990

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Electrical and Electronic Engineering


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