Production of large 41K Bose-Einstein condensates using D1 gray molasses
We use D1 gray molasses to achieve Bose-Einstein condensation of a large number of 41K atoms in an optical dipole trap. By combining a specific configuration of a compressed magneto-optical trap with D1 gray molasses, we obtain a cold sample of 2.4×109 atoms with a temperature as low as 42 μK. After...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
8 September 2016
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| In: |
Physical review
Year: 2016, Volume: 94, Issue: 3 |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.94.033408 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.94.033408 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.94.033408 
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| Author Notes: | Hao-Ze Chen, Xing-Can Yao, Yu-Ping Wu, Xiang-Pei Liu, Xiao-Qiong Wang, Yu-Xuan Wang, Yu-Ao Chen and Jian-Wei Pan |
| Summary: | We use D1 gray molasses to achieve Bose-Einstein condensation of a large number of 41K atoms in an optical dipole trap. By combining a specific configuration of a compressed magneto-optical trap with D1 gray molasses, we obtain a cold sample of 2.4×109 atoms with a temperature as low as 42 μK. After magnetically transferring the atoms into the final glass cell, we perform a two-stage evaporative cooling. A condensate with up to 1.2×106 atoms in the lowest Zeeman state |F=1,mF=1⟩ is achieved in the optical dipole trap. Furthermore, we observe two narrow Feshbach resonances in the lowest hyperfine channel, which are in good agreement with theoretical predictions. |
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| Item Description: | Gesehen am 30.04.2020 Im Titel ist "41" in 41K hochgestellt |
| Physical Description: | Online Resource |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.94.033408 |