@article{1b598a000c6411df825d000ea68e967b,
title = "Two-photon cooling of magnesium atoms",
abstract = "A two-photon mechanism for cooling atoms below the Doppler temperature is analyzed. We consider the magnesium ladder system (3s2)S01¿(3s3p)P11 at 285.2nm followed by the (3s3p)P11¿(3s3d)D21 transition at 880.7nm . 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.",
author = "N. Malossi and S. Damkj{\ae}r and Hansen, {P. L.} and Jacobsen, {L. B.} and L. Kindt and S. Sauge and Thomsen, {Jan Westenk{\ae}r} and Cruz, {F. C.} and M. Allegrini and E. Arimondo",
note = "Keywords: Optical cooling of atoms; trapping; Mechanical effects of light on atoms; molecules; electrons; and ions; Other multiphoton processes",
year = "2005",
doi = "10.1103/PhysRevA.72.051403",
language = "English",
volume = "72",
pages = "051403(R)",
journal = "Physical Review A - Atomic, Molecular, and Optical Physics",
issn = "1050-2947",
publisher = "American Physical Society",
}