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@article{Williams:2017:1367-2630/aa8e52,
author = {Williams, H and Truppe, S and Hambach, M and Caldwell, L and Fitch, N and Hinds, E and Sauer, B and Tarbutt, M},
doi = {1367-2630/aa8e52},
journal = {New Journal of Physics},
title = {Characteristics of a magneto-optical trap of molecules},
url = {http://dx.doi.org/10.1088/1367-2630/aa8e52},
volume = {19},
year = {2017}
}

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TY  - JOUR
AB  - We present the properties of a magneto-optical trap (MOT) of CaFmolecules. We study the process of loading the MOT from a decelerated bu er-gas-cooled beam, and how best to slow this molecular beam in order to capture the most molecules. We determine how the number of molecules, the photon scattering rate, the oscillation frequency, damping constant, temperature, cloud size and lifetime depend on the key parameters of the MOT, especially the intensity and detuning of the main cooling laser. We compare our results to analytical and numerical models, to the properties of standard atomic MOTs, and to MOTs of SrF molecules. We load up to 2 x  10 molecules, and measure a maximum scattering rate of 2.5 x  10 s¹ per molecule, a maximum oscillation frequency of 100 Hz, a maximum damping constant of 500 s¹, and a minimum MOT rms radius of 1.5 mm. A minimum temperature of 730  μK is obtained by ramping down the laser intensity to low values. The lifetime, typically about 100 ms, is consistent with a leak out of the cooling cycle with a branching ratio of about 6 x  10. The MOT has a capture velocity of about 11 m/s.
AU  - Williams,H
AU  - Truppe,S
AU  - Hambach,M
AU  - Caldwell,L
AU  - Fitch,N
AU  - Hinds,E
AU  - Sauer,B
AU  - Tarbutt,M
DO  - 1367-2630/aa8e52
PY  - 2017///
SN  - 1367-2630
TI  - Characteristics of a magneto-optical trap of molecules
T2  - New Journal of Physics
UR  - http://dx.doi.org/10.1088/1367-2630/aa8e52
UR  - http://hdl.handle.net/10044/1/51485
VL  - 19
ER  -

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