A new route for laser cooling and trapping of cold molecules: Intensity-gradient cooling of MgF molecules using localized hollow beams
In: New Journal of Physics, Jg. 22 (2020), Heft 3, S. 033003-33003
Online
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Zugriff:
We propose a promising scheme to prepare ultracold MgF molecules from a slowed cold molecular beam by using three-dimensional pure intensity-gradient induced Sisyphus cooling. The cooling is based on a blue-detuned localized hollow beam and a weak repumping beam. We investigate the dynamic process in the trap with the method of the Monte-Carlo simulations, verifying the feasibility. Our results show that achieving sub-Doppler temperature should be possible in such a well-designed trap; the trapped MgF molecules with initial temperature of $1\,{\rm{mK}}$ can be directly cooled to the final equilibrium temperature of about $46.5\,\mu {\rm{K}},$ well below the Doppler limit (about $527.9\,\mu {\rm{K}}$ for MgF); meanwhile, molecules with initial temperature of $14\,{\rm{mK}}$ can be even cooled to about $68.7\,\mu {\rm{K}}.$
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A new route for laser cooling and trapping of cold molecules: Intensity-gradient cooling of MgF molecules using localized hollow beams
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Autor/in / Beteiligte Person: | Yan, Kang ; Wei, Bin ; Yin, Yaling ; Xu, Supeng ; Xu, Liang ; Xia, Meng ; Gu, Ruoxi ; Xia, Yong ; Yin, Jianping |
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Zeitschrift: | New Journal of Physics, Jg. 22 (2020), Heft 3, S. 033003-33003 |
Veröffentlichung: | IOP Publishing, 2020 |
Medientyp: | academicJournal |
ISSN: | 1367-2630 (print) |
DOI: | 10.1088/1367-2630/ab7253 |
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