Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/78813
Type: Artigo
Title: Temperature limits in laser cooling of free atoms with three-level cascade transitions
Author: Cruz, Flavio C.
Sundheimer, Michael L.
Magno, Wictor C.
Abstract: We employ semiclassical theoretical analysis to study laser cooling of free atoms using three-level cascade transitions, where the upper transition is much weaker than the lower one. This represents an alternate cooling scheme, particularly useful for group II atoms. We find that temperatures below the Doppler limits associated with each of these transitions are expected. The lowest temperatures arise from a remarkable increase in damping and reduced diffusion compared to two-level cooling. They are reached at the two-photon resonance, where there is a crossing between the narrow and the partially dark dressed states, and can be estimated simply by the usual Doppler limit considering the decay rate of the optical coherence between these states.
We employ semiclassical theoretical analysis to study laser cooling of free atoms using three-level cascade transitions, where the upper transition is much weaker than the lower one. This represents an alternate cooling scheme, particularly useful for group II atoms. We find that temperatures below the Doppler limits associated with each of these transitions are expected. The lowest temperatures arise from a remarkable increase in damping and reduced diffusion compared to two-level cooling. They are reached at the two-photon resonance, where there is a crossing between the narrow and the partially dark dressed states, and can be estimated simply by the usual Doppler limit considering the decay rate of the optical coherence between these states.
Subject: Transparência induzida eletromagneticamente
Difusão
Átomos
Country: Estados Unidos
Editor: American Physical Society
Citation: Physical Review A. Amer Physical Soc, v. 87, n. 6, 2013.
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.87.063409
Address: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.87.063409
Date Issue: 2013
Appears in Collections:IFGW - Artigos e Outros Documentos

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