2006年4月
Quantum-degenerate gases of Ytterbium atoms
Laser Physics
- ,
- ,
- ,
- ,
- 巻
- 16
- 号
- 4
- 開始ページ
- 713
- 終了ページ
- 717
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1134/S1054660X06040281
- 出版者・発行元
- MAIK NAUKA/INTERPERIODICA/SPRINGER
Evaporative cooling of ultracold Yb atoms near the quantum-degenerate regime was experimentally studied. Three bosons of 170Yb, 172Yb, 176Yb and two fermions of 171Yb and 173Yb were evaporatively cooled in a crossed far-off resonant trap (FORT). We observed that 170Yb and 172Yb were not concentrated into the crossed region. We found that, in the cases of 176Yb atoms, atoms were concentrated well into the crossed region. The following evaporative cooling in the crossed region, however, did not work well. We performed the simultaneous trapping and sympathetic cooling in the crossed FORT by use of 172Yb-174Yb, 174Yb- 176Yb, 172Yb-176Yb, and 171Yb- 174Yb pairs. We observed that evaporative cooling worked well. This result shows that we succeeded in the enhancement of the atom collision rate. Especially, by use of 174Yb-176Yb mixture, we obtained cold 176Yb whose phase space density was 0.02. We observed a large atom loss, which limited the further sympathetic evaporative cooling. We also evaporatively cooled 174Yb in a 1D optical lattice. Evaporative cooling worked very well because the atoms were initially trapped at a high density. After evaporative cooling, we obtained very cold atoms, and T/T F was estimated to be 1.2. © Nauka/Interperiodica 2006.
- リンク情報
-
- DOI
- https://doi.org/10.1134/S1054660X06040281
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000243786500028&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33750923058&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=33750923058&origin=inward
- ID情報
-
- DOI : 10.1134/S1054660X06040281
- ISSN : 1054-660X
- eISSN : 1555-6611
- SCOPUS ID : 33750923058
- Web of Science ID : WOS:000243786500028