Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures

Year: 2006

Authors: Ferrari G., Drullinger R.E., Poli N., Sorrentino F., Tino G.M.

Autors Affiliation: Dipartimento di Fisica and LENS, Istituto Nazionale Fisica Nucleare, Istituto Nazionale Fisica della Materia, Polo Scientifico Università di Firenze, 50019 Sesto Fiorentino, Italy

Abstract: Based on an experimental study of two-body and three-body collisions in ultracold strontium samples, a novel optical-sympathetic cooling method in isotopic mixtures is demonstrated. Without evaporative cooling, a phase-space density of 6×10(-2) is obtained with a high spatial density that should allow us to overcome the difficulties encountered so far to reach quantum degeneracy for Sr atoms.

Journal/Review: PHYSICAL REVIEW A

Volume: 73 (2)      Pages from: 023408-1  to: 023408-4

KeyWords: laser cooling; strontium; isotopic mixtures; high phase-space density;
DOI: 10.1103/PhysRevA.73.023408

Citations: 29
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