Please use this identifier to cite or link to this item:
http://repositorio.unicamp.br/jspui/handle/REPOSIP/76837
Type: | Artigo |
Title: | Two-photon cooling of magnesium atoms |
Author: | Malossi, N. Damkjaer, S. Hansen, P. L. Jacobsen, L. B. Kindt, L. Sauge, S. Thomsen, J. W. Cruz, F. C. Allegrini, M. Arimondo, E. |
Abstract: | A two-photon mechanism for cooling atoms below the Doppler temperature is analyzed. We consider the magnesium ladder system (3s(2))S-1(0)->(3s3p)P-1(1) at 285.2 nm followed by the (3s3p)P-1(1)->(3s3d)D-1(2) transition at 880.7 nm. For the ladder system quantum coherence effects may become important. Combined with the basic two-level Doppler cooling process this allows for reduction of the atomic sample temperature by more than a factor of 10 over a broad frequency range. First experimental evidence for the two-photon cooling process is presented and compared to model calculations. Agreement between theory and experiment is excellent. In addition, by properly choosing the Rabi frequencies of the two optical transitions a velocity independent atomic dark state is observed. A two-photon mechanism for cooling atoms below the Doppler temperature is analyzed. We consider the magnesium ladder system (3s(2))S-1(0)->(3s3p)P-1(1) at 285.2 nm followed by the (3s3p)P-1(1)->(3s3d)D-1(2) transition at 880.7 nm. For the ladder system quantum coherence effects may become important. Combined with the basic two-level Doppler cooling process this allows for reduction of the atomic sample temperature by more than a factor of 10 over a broad frequency range. First experimental evidence for the two-photon cooling process is presented and compared to model calculations. Agreement between theory and experiment is excellent. In addition, by properly choosing the Rabi frequencies of the two optical transitions a velocity independent atomic dark state is observed. |
Subject: | Resfriamento a laser Simulação (Computadores) Modelos matemáticos |
Country: | Estados Unidos |
Editor: | American Physical Society |
Citation: | Physical Review A. American Physical Soc, v. 72, n. 5, 2005. |
Rights: | aberto |
Identifier DOI: | 10.1103/PhysRevA.72.051403 |
Address: | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.72.051403 |
Date Issue: | 2005 |
Appears in Collections: | IFGW - Artigos e Outros Documentos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
000233603400014.pdf | 304.41 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.