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Scaling laws in velocity-selective coherent-population-trapping laser cooling
Morigi, Giovanna (Università di Pisa. Dipartimento di Fisica)
Zambon, B. (Università di Pisa. Dipartimento di Fisica)
Leinfellner, N. (Università di Pisa. Dipartimento di Fisica)
Arimondo, Ennio (University of Colorado)
American Physical Society

Data: 1996
Resum: One-dimensional laser cooling based on velocity-selective coherent population trapping (VSCPT) has been investigated numerically through the solution of the optical Bloch equations and through a Monte Carlo analysis. The 1→1 and 2→2 transitions have been examined as a function of the atomic recoil frequency, the spontaneous-emission decay rate, and the Rabi frequency of the cooling laser. It has been found that for a large set of those parameters, the VSCPT cooling process may be described through scaling-law relations. The scaling laws are not valid at long atom-laser interaction times or large Rabi frequencies, where the atomic Doppler shift plays a significant role in the atomic motion evolution. Similar results for two atomic transitions suggest the validity of the scaling law for any one-dimensional VSCPT process.
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; recerca ; publishedVersion
Publicat a: Physical review. A, Vol. 53, Issue 4 (April 1996) , p. 2616-2626, ISSN 1050-2947

DOI: 10.1103/PhysRevA.53.2616

11 p, 237.0 KB

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