Cooling atoms below 100 μK

Shih Kuang Tung*, Ying Cheng Chen, Chung Wei Lin, Long Hsu, Ite A. Yu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We capture 87Rb atoms from room-temperature background vapor with a magneto-optical trap (MOT). The temperature of the atoms in the MOT is 320 μK as the result of Doppler cooling. We further employ polarization gradient cooling to lower atom temperature. The factors that can affect the performance of polarization gradient cooling have been systematically studied. An atom temperature of 75 μK has been reached with the optimized conditions. Temperatures are measured by the release and recapture method and the time of flight method. Such cold atoms are ready for the evaporative cooling which will finally realize the Bose-Einstein condensation.

Original languageEnglish
Pages (from-to)395-399
Number of pages5
JournalChinese Journal of Physics
Volume38
Issue number2-2
StatePublished - 1 Dec 2000

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