Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 183-189 |
| Fachzeitschrift | Journal of Optics B: Quantum and Semiclassical Optics |
| Jahrgang | 5 |
| Ausgabenummer | 2 |
| Publikationsstatus | Veröffentlicht - 2 Apr. 2003 |
Abstract
Quench cooling is a promising technique to reach ultra-cold temperatures in alkaline-earth atoms by Doppler cooling on ultra-narrow transitions. The principles of quench cooling are derived from an effective two-level system with a linewidth adjustable by the quenching laser. A tunable linewidth reconciles the contradictory requirements of a fast cooling rate and a high velocity selectivity at high and low temperatures, respectively. In this paper, we investigate the efficiency of quench cooling in alkaline-earth systems. We present a one-dimensional analytical description of the quenching process. Cooling and trapping in three dimensions is studied with semi-classical Monte Carlo simulations. Our results for magnesium indicate a loading efficiency of up to 40% of pre-cooled atoms at 2 mK into a QuenchMOT. Final temperatures of 9 μK and an increase in phase-space density by almost five orders of magnitude are observed in the simulations.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
- Physik und Astronomie (insg.)
- Physik und Astronomie (sonstige)
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in: Journal of Optics B: Quantum and Semiclassical Optics, Jahrgang 5, Nr. 2, 02.04.2003, S. 183-189.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Modelling three-dimensional-quench cooling for alkaline-earth atoms
AU - Mehlstäubler, T. E.
AU - Keupp, J.
AU - Douillet, A.
AU - Rehbein, N.
AU - Rasel, E. M.
AU - Ertmer, W.
PY - 2003/4/2
Y1 - 2003/4/2
N2 - Quench cooling is a promising technique to reach ultra-cold temperatures in alkaline-earth atoms by Doppler cooling on ultra-narrow transitions. The principles of quench cooling are derived from an effective two-level system with a linewidth adjustable by the quenching laser. A tunable linewidth reconciles the contradictory requirements of a fast cooling rate and a high velocity selectivity at high and low temperatures, respectively. In this paper, we investigate the efficiency of quench cooling in alkaline-earth systems. We present a one-dimensional analytical description of the quenching process. Cooling and trapping in three dimensions is studied with semi-classical Monte Carlo simulations. Our results for magnesium indicate a loading efficiency of up to 40% of pre-cooled atoms at 2 mK into a QuenchMOT. Final temperatures of 9 μK and an increase in phase-space density by almost five orders of magnitude are observed in the simulations.
AB - Quench cooling is a promising technique to reach ultra-cold temperatures in alkaline-earth atoms by Doppler cooling on ultra-narrow transitions. The principles of quench cooling are derived from an effective two-level system with a linewidth adjustable by the quenching laser. A tunable linewidth reconciles the contradictory requirements of a fast cooling rate and a high velocity selectivity at high and low temperatures, respectively. In this paper, we investigate the efficiency of quench cooling in alkaline-earth systems. We present a one-dimensional analytical description of the quenching process. Cooling and trapping in three dimensions is studied with semi-classical Monte Carlo simulations. Our results for magnesium indicate a loading efficiency of up to 40% of pre-cooled atoms at 2 mK into a QuenchMOT. Final temperatures of 9 μK and an increase in phase-space density by almost five orders of magnitude are observed in the simulations.
KW - Alkaline-earth atoms
KW - Atom trapping
KW - Laser cooling
KW - Optical frequency standard
KW - Quench cooling
UR - http://www.scopus.com/inward/record.url?scp=18144440072&partnerID=8YFLogxK
U2 - 10.1088/1464-4266/5/2/378
DO - 10.1088/1464-4266/5/2/378
M3 - Article
AN - SCOPUS:18144440072
VL - 5
SP - 183
EP - 189
JO - Journal of Optics B: Quantum and Semiclassical Optics
JF - Journal of Optics B: Quantum and Semiclassical Optics
SN - 1464-4266
IS - 2
ER -