Doppler Cooling and Trapping on Forbidden Transitions
- 30 August 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (12), 123002
- https://doi.org/10.1103/physrevlett.87.123002
Abstract
Ultracold atoms at temperatures close to the recoil limit have been achieved by extending Doppler cooling to forbidden transitions. A cloud of atoms has been cooled and trapped to a temperature as low as by operating a magnetooptical trap on the spin-forbidden intercombination transition. Quenching the long-lived excited state with an additional laser enhanced the scattering rate by a factor of 15, while a high selectivity in velocity was preserved. With this method, more than of precooled atoms from a standard magnetooptical trap have been transferred to the ultracold trap. Monte Carlo simulations of the cooling process are in good agreement with the experiments.
Keywords
This publication has 16 references indexed in Scilit:
- Photoassociation of Cold Ca AtomsPhysical Review Letters, 2000
- The optical calcium frequency standardIEEE Transactions on Instrumentation and Measurement, 1999
- Cold collisions ofin a magneto-optical trapPhysical Review A, 1999
- A diode-laser optical frequency standard based on laser-cooled Ca atoms: Sub-kilohertz spectroscopy by optical shelving detectionThe European Physical Journal D, 1999
- Reabsorption of Light by Trapped AtomsPhysical Review Letters, 1998
- Sub-Kilohertz Optical Spectroscopy with a Time Domain Atom InterferometerPhysical Review Letters, 1998
- Laser cooling below a photon recoil with three-level atomsPhysical Review Letters, 1992
- Laser Cooling below the One-Photon Recoil Energy by Velocity-Selective Coherent Population TrappingPhysical Review Letters, 1988
- Observation of Atoms Laser Cooled below the Doppler LimitPhysical Review Letters, 1988
- Three-dimensional viscous confinement and cooling of atoms by resonance radiation pressurePhysical Review Letters, 1985