Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 013634 |
| Fachzeitschrift | Physical Review A |
| Jahrgang | 101 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 28 Jan. 2020 |
Abstract
In recent years, cold atoms could prove their scientific impact not only on ground but in microgravity environments such as the drop tower in Bremen, sounding rockets, and parabolic flights. We investigate the preparation of cold atoms in an optical dipole trap, with an emphasis on evaporative cooling under microgravity. Up to 1×106 rubidium-87 atoms were optically trapped from a temporarily dark magneto-optical trap during free fall in the drop tower in Bremen. The efficiency of evaporation is determined to be equal with and without the effect of gravity. This is confirmed using numerical simulations that prove the dimension of evaporation to be three dimensional in both cases due to the anharmonicity of optical potentials. These findings pave the way towards various experiments on ultracold atoms under microgravity and support other existing experiments based on atom chips but with plans for additional optical dipole traps such as the upcoming follow-up missions to past and current space-borne experiments.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
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in: Physical Review A, Jahrgang 101, Nr. 1, 013634, 28.01.2020.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Evaporative cooling from an optical dipole trap in microgravity
AU - Vogt, Christian
AU - Woltmann, Marian
AU - Herrmann, Sven
AU - Lämmerzahl, Claus
AU - Albers, Henning
AU - Schlippert, Dennis
AU - Rasel, Ernst M.
N1 - Funding information: This project was supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under Grants No. DLR 50WM1642 and No. DLR 50WM1641 (PRIMUS-III). D.S. is grateful for personal funding by the Federal Ministry of Education and Research (BMBF) through the funding program Photonics Research Germany under Contract No. 13N14875.
PY - 2020/1/28
Y1 - 2020/1/28
N2 - In recent years, cold atoms could prove their scientific impact not only on ground but in microgravity environments such as the drop tower in Bremen, sounding rockets, and parabolic flights. We investigate the preparation of cold atoms in an optical dipole trap, with an emphasis on evaporative cooling under microgravity. Up to 1×106 rubidium-87 atoms were optically trapped from a temporarily dark magneto-optical trap during free fall in the drop tower in Bremen. The efficiency of evaporation is determined to be equal with and without the effect of gravity. This is confirmed using numerical simulations that prove the dimension of evaporation to be three dimensional in both cases due to the anharmonicity of optical potentials. These findings pave the way towards various experiments on ultracold atoms under microgravity and support other existing experiments based on atom chips but with plans for additional optical dipole traps such as the upcoming follow-up missions to past and current space-borne experiments.
AB - In recent years, cold atoms could prove their scientific impact not only on ground but in microgravity environments such as the drop tower in Bremen, sounding rockets, and parabolic flights. We investigate the preparation of cold atoms in an optical dipole trap, with an emphasis on evaporative cooling under microgravity. Up to 1×106 rubidium-87 atoms were optically trapped from a temporarily dark magneto-optical trap during free fall in the drop tower in Bremen. The efficiency of evaporation is determined to be equal with and without the effect of gravity. This is confirmed using numerical simulations that prove the dimension of evaporation to be three dimensional in both cases due to the anharmonicity of optical potentials. These findings pave the way towards various experiments on ultracold atoms under microgravity and support other existing experiments based on atom chips but with plans for additional optical dipole traps such as the upcoming follow-up missions to past and current space-borne experiments.
UR - http://www.scopus.com/inward/record.url?scp=85078824530&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.101.013634
DO - 10.1103/PhysRevA.101.013634
M3 - Article
AN - SCOPUS:85078824530
VL - 101
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 1
M1 - 013634
ER -