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High Compression Blue-Detuned Magneto-Optical Trap of Polyatomic Molecules
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abstract
We demonstrate a blue-detuned magneto-optical trap (MOT) of a polyatomic molecule, calcium monohydroxide (CaOH). We identify a novel MOT frequency configuration that produces high spatial compression of the molecular cloud. This high compression MOT achieves a cloud radius of $59(5)~\mu\text{m}$ and a peak density of $8(2) \times 10^8~\text{cm}^{-3}$, the highest reported density for a molecular MOT to date. We compare our experimental studies of blue-detuned MOTs for CaOH and compare with Monte-Carlo simulations, finding good agreement.
Forward citations
Cited by 4 Pith papers
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Trapping and cooling mechanisms in blue-detuned magneto-optical traps of molecules
Trapping in blue-detuned molecular MOTs is caused by a Zeeman-induced dark state, not by the standard Doppler force.
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Magneto-Optical Trapping of a Metal Hydride Molecule
A magneto-optical trap for CaH molecules is demonstrated, trapping about 230 molecules at sub-millikelvin temperatures with lifetimes up to 30 ms.
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Optical Trapping of SrOH Molecules for Dark Matter and T-violation Searches
An optical dipole trap holds about 1,400 SrOH molecules, and eEDM- and dark-matter-sensitive vibrational states show lifetimes of 135 to 320 ms, consistent with radiative decay.
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Blue-detuned Magneto-optical Trap of BaF molecules
A conveyor-belt blue-detuned MOT compresses trapped BaF molecules to 320 um, 240 uK, and a peak density of 1.3e7 cm^-3, a 50x density improvement over the red MOT.
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