All-Optical Production of Quantum Degeneracy and Molecular Bose-Einstein Condensation of ~6Li  

作　　者：邓书金 刁鹏鹏 俞千里 武海斌 

机构地区：[1]State Key Laboratory of Precision Spectroscopy,Department of Physics,East China Normal University

出　　处：《Chinese Physics Letters》2015年第5期47-50,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11374101;the Shanghai Pujiang Program under Grant No 13PJ1402500

摘　　要：We achieve a highly degenerate and strongly interacting Fermi gas in a mixture of the two lowest hyperfine states of 6 Li by direct evaporative cooling in a high power crossed optical dipole trap. The trap is loaded from a large atom number magneto-optical trap realized by a laser system of Z5-W intracavity-frequency-doubled light output at 671 nm. With this system, we also demonstrate the production of a molecular Bose-Einstein condensate （reBEC） of 6Li2, and observe the anisotropic expansion of Fermi gases in the so-called BEC-Bardeen-Cooper-Schrieffer crossover regime.We achieve a highly degenerate and strongly interacting Fermi gas in a mixture of the two lowest hyperfine states of 6 Li by direct evaporative cooling in a high power crossed optical dipole trap. The trap is loaded from a large atom number magneto-optical trap realized by a laser system of Z5-W intracavity-frequency-doubled light output at 671 nm. With this system, we also demonstrate the production of a molecular Bose-Einstein condensate （reBEC） of 6Li2, and observe the anisotropic expansion of Fermi gases in the so-called BEC-Bardeen-Cooper-Schrieffer crossover regime.

关 键 词：All-Optical Production of Quantum Degeneracy and Molecular Bose-Einstein Condensation of BEC Li 

分 类 号：O413[理学—理论物理] O469[理学—物理]