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Sub-Doppler cooling of sodium atoms in gray molasses

  Articoli su Riviste JCR/ISI  (anno 2016)

Autori:  Colzi G., Durastante G., Fava E., Serafini S., Lamporesi G., Ferrari G

Affiliazione Autori:  1 INO-CNR BEC Center and Dipartimento di Fisica, Universit`a di Trento, 38123 Povo, Italy 2 Trento Institute for Fundamental Physics and Applications, INFN, 38123 Povo, Italy

Riassunto:  We report on the realization of sub-Doppler laser cooling of sodium atoms in gray molasses using the D1 optical transition (3s 2 S1/2 → 3p 2P1/2) at 589.8 nm. The technique is applied to samples containing 3 × 10^9 atoms, previously cooled to 350 μK in a magneto-optical trap, and it leads to temperatures as low as 9 μK and phase-space densities in the range of 10^−4. The capture efficiency of the gray molasses is larger than 2/3, and we observe no density-dependent heating for densities up to 10^11 cm^−3.

Rivista/Giornale:  PHYSICAL REVIEW A
Volume n.:  93      Pagine da: 023421-1  a: 023421-6

*Impact Factor della Rivista: (2016) 2.925
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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