Radiative deflection of a BaF molecular beam from the optical cycling

We demonstrate a quasi optical cycling for the \(X(v=0)\to A(v'=0)\) transition and a radiative force induced deflection on the buffer-gas cooled BaF molecular beam. The laser induced fluorescence enhancement with additional sidebands and a polarization modulation scheme indicates that the hype...

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Bibliographic Details
Published inarXiv.org
Main Authors Chen, Tao, Bu, Wenhao, Yan, Bo
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.09.2017
Subjects
Cycles
Deflection
Laser beams
Laser cooling
Laser induced fluorescence
Molecular beams
Photons
Physics - Atomic Physics
Polarization modulation
Scattering
Sidebands
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Summary:We demonstrate a quasi optical cycling for the \(X(v=0)\to A(v'=0)\) transition and a radiative force induced deflection on the buffer-gas cooled BaF molecular beam. The laser induced fluorescence enhancement with additional sidebands and a polarization modulation scheme indicates that the hyperfine states and the Zeeman sublevels are closed. The quasi optical cycling by repumping the \(X(v=1)\to A(v'=0)\) leads to a \(\sim\) 0.8 mm deflection of the beam via scattering \(\sim\) 150 photons per molecule, in good agreement with the predictions from our multi-level rate equation model. Further improvement by closing the leakage \(X(v=2)\) and \(\Delta\) state allows scattering thousands of photons, and laser cooling and slowing of BaF.
ISSN:2331-8422
DOI:10.48550/arxiv.1709.07602