Title :
Sub-Doppler cooling with the 1S0-1P1 line in ytterbium
Author :
Kostylev, N. ; Ivanov, Eugene ; Tobar, M.E. ; McFerran, J.J.
Author_Institution :
Sch. of Phys., Univ. of Western Australia, Crawley, WA, Australia
Abstract :
We have studied the temperatures of several neutral Yb isotopes in a magneto-optical trap (MOT) using the 1S0-1P1 transition at 398.9 nm. We use a compact MOT with a titanium vacuum chamber and a high degree of othogonality between the beams. Minimum temperatures of 170 μK and 80 μK are recorded for 171Yb, and 173Yb, respectively, while 0.95 mK is measured for 172Yb. By comparison the 1D Doppler cooling temperature limit is 694 μK. The results augur well for future lattice clocks that use Yb. We comment on the significance of sub-Doppler cooling of atoms with ground-state total angular momentum F =1/2, as is the case for 171Yb.
Keywords :
Doppler effect; angular momentum; atomic clocks; isotopes; magneto-optical effects; optical lattices; radiation pressure; ytterbium; 1S0-1P1 line; angular momentum; compact MOT; high degree of othogonality; lattice clocks; magnetooptical trap; neutral Yb isotopes; sub-Doppler cooling; temperature 0.95 mK; temperature 170 muK to 80 muK; titanium vacuum chamber; wavelength 398.9 nm; Atomic clocks; Atomic measurements; Clouds; Cooling; Laser beams; Temperature measurement; magneto-optical trap; sub-Doppler cooling; ytterbium;
Conference_Titel :
Frequency Control Symposium (FCS), 2014 IEEE International
Conference_Location :
Taipei
DOI :
10.1109/FCS.2014.6859900
