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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 18 — Sep. 15, 2010
  • pp: 3078–3080

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

J. J. McFerran, L. Yi, S. Mejri, and S. Bize  »View Author Affiliations

Optics Letters, Vol. 35, Issue 18, pp. 3078-3080 (2010)

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Laser cooling and trapping of neutral mercury is performed in a single-stage S 0 1 P 1 3 3D magneto-optical trap. We give a detailed account of the atom cloud size and temperature for both bosonic ( Hg 200 and Hg 202 ) and fermionic ( Hg 199 and Hg 201 ) 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 Hg 201 .

© 2010 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6780) Instrumentation, measurement, and metrology : Temperature
(140.3320) Lasers and laser optics : Laser cooling
(300.6540) Spectroscopy : Spectroscopy, ultraviolet
(140.3515) Lasers and laser optics : Lasers, frequency doubled

ToC Category:
Atomic and Molecular Physics

Original Manuscript: May 21, 2010
Revised Manuscript: August 17, 2010
Manuscript Accepted: August 16, 2010
Published: September 8, 2010

J. J. McFerran, L. Yi, S. Mejri, and S. Bize, "Sub-Doppler cooling of fermionic Hg isotopes in a magneto-optical trap," Opt. Lett. 35, 3078-3080 (2010)

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