Radiative branching ratios for excited states of 174YbF: Application to laser cooling

I. J. Smallman; F. Wang; Timothy Steimle; M. R. Tarbutt; E. A. Hinds

doi:10.1016/j.jms.2014.02.006

Radiative branching ratios for excited states of ¹⁷⁴YbF: Application to laser cooling

I. J. Smallman, F. Wang, Timothy Steimle, M. R. Tarbutt, E. A. Hinds

Molecular Sciences, School of (SMS)

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

We excite YbF molecules to low-lying vibrational levels of the A ²Π_1/2 state, and of the nearby perturber state sometimes called [18.6]0.5. By dispersing the fluorescence, we measure branching ratios for the radiative decay to vibrational levels of the X ²Σ⁺ state. These ratios help to determine the optimum laser cooling scheme for the molecule. Our results establish the practicality of a scheme that was previously suggested (Tarbutt et al., 2013) and show how the scheme can be modified to provide a stronger radiative cooling force.

Original language	English (US)
Pages (from-to)	3-6
Number of pages	4
Journal	Journal of molecular spectroscopy
Volume	300
DOIs	https://doi.org/10.1016/j.jms.2014.02.006
State	Published - Jun 2014

Keywords

Laser cooling molecules
Radiative branching ratios
Ytterbium fluoride (YbF)

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.jms.2014.02.006

Cite this

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title = "Radiative branching ratios for excited states of 174YbF: Application to laser cooling",

abstract = "We excite YbF molecules to low-lying vibrational levels of the A 2Π1/2 state, and of the nearby perturber state sometimes called [18.6]0.5. By dispersing the fluorescence, we measure branching ratios for the radiative decay to vibrational levels of the X 2Σ+ state. These ratios help to determine the optimum laser cooling scheme for the molecule. Our results establish the practicality of a scheme that was previously suggested (Tarbutt et al., 2013) and show how the scheme can be modified to provide a stronger radiative cooling force.",

keywords = "Laser cooling molecules, Radiative branching ratios, Ytterbium fluoride (YbF)",

author = "Smallman, {I. J.} and F. Wang and Timothy Steimle and Tarbutt, {M. R.} and Hinds, {E. A.}",

note = "Funding Information: The authors would like to thank Anh Le for her assistance with the experimental measurements, as well as Jony Hudson and Ben Sauer for many useful discussions. The work at Arizona State University was supported by a grant ( CHE-1265885 ) from the Chemistry Division of the National Science Foundation. Work at Imperial College London was supported by the Royal Society, EPSRC and ERC. ",

year = "2014",

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doi = "10.1016/j.jms.2014.02.006",

language = "English (US)",

volume = "300",

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journal = "Journal of molecular spectroscopy",

issn = "0022-2852",

publisher = "Academic Press Inc.",

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T1 - Radiative branching ratios for excited states of 174YbF

T2 - Application to laser cooling

AU - Smallman, I. J.

AU - Wang, F.

AU - Steimle, Timothy

AU - Tarbutt, M. R.

AU - Hinds, E. A.

N1 - Funding Information: The authors would like to thank Anh Le for her assistance with the experimental measurements, as well as Jony Hudson and Ben Sauer for many useful discussions. The work at Arizona State University was supported by a grant ( CHE-1265885 ) from the Chemistry Division of the National Science Foundation. Work at Imperial College London was supported by the Royal Society, EPSRC and ERC.

PY - 2014/6

Y1 - 2014/6

N2 - We excite YbF molecules to low-lying vibrational levels of the A 2Π1/2 state, and of the nearby perturber state sometimes called [18.6]0.5. By dispersing the fluorescence, we measure branching ratios for the radiative decay to vibrational levels of the X 2Σ+ state. These ratios help to determine the optimum laser cooling scheme for the molecule. Our results establish the practicality of a scheme that was previously suggested (Tarbutt et al., 2013) and show how the scheme can be modified to provide a stronger radiative cooling force.

AB - We excite YbF molecules to low-lying vibrational levels of the A 2Π1/2 state, and of the nearby perturber state sometimes called [18.6]0.5. By dispersing the fluorescence, we measure branching ratios for the radiative decay to vibrational levels of the X 2Σ+ state. These ratios help to determine the optimum laser cooling scheme for the molecule. Our results establish the practicality of a scheme that was previously suggested (Tarbutt et al., 2013) and show how the scheme can be modified to provide a stronger radiative cooling force.

KW - Laser cooling molecules

KW - Radiative branching ratios

KW - Ytterbium fluoride (YbF)

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