Two-photon cooling of magnesium atoms

N. Malossi; S. Damkjær; P. L. Hansen; L. B. Jacobsen; L. Kindt; S. Sauge; Jan Westenkær Thomsen; F. C. Cruz; M. Allegrini; E. Arimondo

doi:10.1103/PhysRevA.72.051403

Two-photon cooling of magnesium atoms

N. Malossi, S. Damkjær, P. L. Hansen, L. B. Jacobsen, L. Kindt, S. Sauge, Jan Westenkær Thomsen, F. C. Cruz, M. Allegrini, E. Arimondo

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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.

Original language	English
Journal	Physical Review A (Atomic, Molecular and Optical Physics)
Volume	72
Pages (from-to)	051403(R)
Number of pages	4
ISSN	2469-9926
DOIs	https://doi.org/10.1103/PhysRevA.72.051403
Publication status	Published - 2005

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10.1103/PhysRevA.72.051403

http://adsabs.harvard.edu/abs/2005PhRvA..72e1403M

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@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 = "2469-9926",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Two-photon cooling of magnesium atoms

AU - Malossi, N.

AU - Damkjær, S.

AU - Hansen, P. L.

AU - Jacobsen, L. B.

AU - Kindt, L.

AU - Sauge, S.

AU - Thomsen, Jan Westenkær

AU - Cruz, F. C.

AU - Allegrini, M.

AU - Arimondo, E.

N1 - Keywords: Optical cooling of atoms; trapping; Mechanical effects of light on atoms; molecules; electrons; and ions; Other multiphoton processes

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevA.72.051403

DO - 10.1103/PhysRevA.72.051403

M3 - Journal article

SN - 2469-9926

VL - 72

SP - 051403(R)

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

ER -

Two-photon cooling of magnesium atoms

Abstract

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