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Experiments on trapping ytterbium atoms in various optical lattices are presented. After the two-stage cooling, first in a blue magneto-optical trap and then in a green magneto-optical trap, the ultracold 171 Yb atoms are successfully loaded into one-, two-, and three-dimensional optical lattices operating at the Stark-free wavelength, respectively. The temperature, number, and lifetime of cold 171 Yb atoms in one-dimensional lattice are measured. After optimization, the one-dimensional lattice with cold 171Yb atoms is used for developing an ytterbium optical clock. 相似文献
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An injection-locked Ti:sapphire laser is developed,with injection locking achieved using the Pound-DreverHall technique.By measuring the dependence of output power on the pump power with various Ti:sapphire laser parameters,we experimentally studied the influences of the ring cavity length,the focal length of the pump-laser mode-matching lens,and the output-coupler transmission on the threshold and slope efficiency.The dependence of the output power on the master laser power is also investigated.The present study provides a guideline for developing a Ti:sapphire laser with high slope efficiency and low threshold. 相似文献
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