Magneto-Optical Trapping of Ytterbium Atoms with a 398.9nm Laser
ZHAO Peng-Yi1,2,3, XIONG Zhuan-Xian1,2,3, LIANG Jie1,2,3, HE Ling-Xiang1,2, LU Bao-Long 1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 4300713Graduate University, Chinese Academy of Sciences, Beijing 100049
Magneto-Optical Trapping of Ytterbium Atoms with a 398.9nm Laser
ZHAO Peng-Yi1,2,3, XIONG Zhuan-Xian1,2,3, LIANG Jie1,2,3, HE Ling-Xiang1,2, LU Bao-Long 1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 4300713Graduate University, Chinese Academy of Sciences, Beijing 100049
摘要We report the realization of ytterbium magneto-optical trap (MOT) operating on the dipole-allowed 1S0-1P1 transition at 398.9nm. 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 107174Yb atoms are collected in the MOT, whereas the atom number of fermionic isotope 171Yb is roughly 2.3×106 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.
Abstract：We report the realization of ytterbium magneto-optical trap (MOT) operating on the dipole-allowed 1S0-1P1 transition at 398.9nm. 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 107174Yb atoms are collected in the MOT, whereas the atom number of fermionic isotope 171Yb is roughly 2.3×106 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.
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2008, Vol. 25 
