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Bulletin of the American Physical Society

Cost-effective magneto-optical trap of ytterbium atoms

Chang Yong Park, Won-Kyu Lee, Dai-Hyuk Yu, Ho Suhng Suh, Sang Eon Park, Eok Bong Kim

Published Jun 8, 2007• 0 citations
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We report the realization of ytterbium magneto-optical trap (MOT) operating on the dipole-allowed 1 S 0 — 1 P 1 transition at 398.9 nm. The MOT is loaded by a slowed atomic beam produced by a Zeeman slower. All seven stable isotopes of Yb atoms could be trapped separately at different laser detuning values. Over 10 7 174 Yb atoms are collected in the MOT, whereas the atom number of fermionic isotope 171 Yb is roughly 2.3 × 10 6 due to a lower abundance. Without the Zeeman slower, the trapped atom numbers are one order of magnitude lower. Both the even and odd isotopes are recognized as excellent candidates of optical clock transition, so the cooling and trapping of ytterbium atoms by the blue MOT is an important step for building an optical clock.