期刊
PHYSICAL REVIEW A
卷 103, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.103.063319
关键词
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资金
- National Research Foundation of Korea [NRF-2018R1A2B3003373, NRF-2019M3E4A1080400]
- Institute for Basic Science in Korea [IBS-R009-D1]
- National Research Foundation of Korea [2019M3E4A1080400] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A large-area Rb-87 Bose-Einstein condensate was successfully produced using a non-Gaussian optical dipole trap (ODT) with elongated and flattened geometry. The atom density of the condensate is uniform within 10% over 1000 healing lengths in the central region, which facilitates vortex shedding experiments.
We demonstrate a production of large-area Rb-87 Bose-Einstein condensates (BECs) using a non-Gaussian optical dipole trap (ODT). The ODT is formed by focusing a symmetrically truncated Gaussian laser beam, and it is shown that the beam clipping causes the trap geometry to be elongated and flattened along the beam axis direction. In the clipped-Gaussian ODT, an elongated, highly oblate BEC of Rb-87 is generated with a length and width of approximately 470 and 130 mu m, respectively, where the condensate healing length is estimated to be xi approximate to 0.25 mu m at the trap center. The ODT is characterized to have a quartic trapping potential along the beam axis and the atom density of the condensate is uniform within 10% over 1000 xi in the central region. Finally, we discuss the prospect of conducting vortex shedding experiments using the elongated condensate.
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