| ATOMIC AND MOLECULAR PHYSICS |
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All-Optical Production of Quantum Degeneracy and Molecular Bose–Einstein Condensation of 6Li |
| DENG Shu-Jin, DIAO Peng-Peng, YU Qian-Li, WU Hai-Bin** |
State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062
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| Cite this article: |
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DENG Shu-Jin, DIAO Peng-Peng, YU Qian-Li et al 2015 Chin. Phys. Lett. 32 053401 |
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Abstract We achieve a highly degenerate and strongly interacting Fermi gas in a mixture of the two lowest hyperfine states of 6Li 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 2.5-W intracavity-frequency-doubled light output at 671 nm. With this system, we also demonstrate the production of a molecular Bose–Einstein condensate (mBEC) of 6Li2, and observe the anisotropic expansion of Fermi gases in the so-called BEC–Bardeen–Cooper–Schrieffer crossover regime.
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Received: 19 January 2015
Published: 01 June 2015
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