Λ-Enhanced Imaging of Molecules in an Optical Trap

We report on nondestructive imaging of optically trapped calcium monofluoride molecules using in situ Λ-enhanced gray molasses cooling. 200 times more fluorescence is obtained compared to destructive on-resonance imaging, and the trapped molecules remain at a temperature of 20  μK. The achieved numb...

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Bibliographic Details
Published in:Physical review letters 2018-08, Vol.121 (8), p.083201-083201, Article 083201
Main Authors: Cheuk, Lawrence W, Anderegg, Loïc, Augenbraun, Benjamin L, Bao, Yicheng, Burchesky, Sean, Ketterle, Wolfgang, Doyle, John M
Format: Article
Language:English
Subjects:
Fluorescence
Imaging
Molasses
Optical traps
Photons
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Summary:We report on nondestructive imaging of optically trapped calcium monofluoride molecules using in situ Λ-enhanced gray molasses cooling. 200 times more fluorescence is obtained compared to destructive on-resonance imaging, and the trapped molecules remain at a temperature of 20  μK. The achieved number of scattered photons makes possible nondestructive single-shot detection of single molecules with high fidelity.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.121.083201