Sub-Doppler cooling of fermionic Hg isotopes in a magneto-optical trap

J. J. McFerran, L. Yi, S. Mejri, S. Bize

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


Laser cooling and trapping of neutral mercury is performed in a single-stage 1S03P1 3D magneto-optical trap. We give a detailed account of the atom cloud size and temperature for both bosonic (200Hg and 202Hg) and fermionic (199Hg and 201Hg) isotopes. The bosonic isotope temperatures are in close agreement with Doppler cooling theory, while temperatures obtained for the fermionic isotopes are lower, suggesting the presence of sub-Doppler cooling. A minimum temperature of 29 ± 4 μK is achieved for 201Hg.

Original languageEnglish
Pages (from-to)3078-3080
Number of pages3
JournalOptics Letters
Issue number18
Publication statusPublished - 16 Sept 2010
Externally publishedYes


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