Three dimensional cooling and trapping with a narrow line

Abstract

The intercombination line of Strontium at 689nm is successfully used in laser cooling to reach the photon recoil limit with Doppler cooling in a magneto-optical traps (MOT). In this paper we present a systematic study of the loading efficiency of such a MOT. Comparing the experimental results to a simple model allows us to discuss the actual limitation of our apparatus. We also study in detail the final MOT regime emphasizing the role of gravity on the position, size and temperature along the vertical and horizontal directions. At large laser detuning, one finds an unusual situation where cooling and trapping occur in the presence of a high bias magnetic field.

References in corpus (5)

• Optical atomic coherence at the one-second time scale
• Quantum logic via the exchange blockade in ultracold collisions
• Narrow Line Photoassociation in an Optical Lattice
• An extra-heating mechanism in Doppler-cooling experiments
• Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures

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• Wave-packet Dynamics in Synthetic Non-Abelian Gauge Fields
• Doppler cooling to the Quantum limit
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• Bi-color atomic beam slower and magnetic field compensation for ultracold gases
• Non equilibrium phase transition with gravitational-like interaction in a cloud of cold atoms
• Fast compression of a cold atomic cloud using a blue detuned crossed dipole trap
• Low and high intensity velocity selective coherent population trapping in a two-level system
• Datta-Das transistor for atomtronic circuits using artificial gauge fields
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• Runaway evaporation for optically dressed atoms
• Geometric Ramsey Interferometry with a Tripod Scheme
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