Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap

Li, Y., Wu, J., Feng, G., Nute, J., Piano, Samanta, Hackermüller, L., Ma, J., Xiao, L. and Jia, S. (2015) Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap. Laser Physics Letters, 12 (5). 055501/1-055501/5. ISSN 1612-202X

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We report enhanced three-dimensional degenerated Raman sideband cooling (3D DRSC) of caesium (Cs) atoms in a standard single-cell vapour-loaded magneto-optical trap. Our improved scheme involves using a separate repumping laser and optimized lattice detuning. We load 1.5 × 107 atoms into the Raman lattice with a detuning of −15.5 GHz (to the ground F = 3 state). Enhanced 3D DRSC is used to cool them from 60 µK to 1.7 µK within 12 ms and the number of obtained atoms is about 1.2 × 107. A theoretical model is proposed to simulate the measured number of trapped atoms. The result shows good agreement with the experimental data. The technique paves the way for loading a large number of ultracold Cs atoms into a crossed dipole trap and efficient evaporative cooling in a single-cell system.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/746331
Additional Information: Y Li et al 2015 Laser Phys. Lett. 12 055501
Keywords: degenerated Raman sideband cooling, lattice, detuning
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1088/1612-2011/12/5/055501
Depositing User: Eprints, Support
Date Deposited: 02 Oct 2017 12:06
Last Modified: 04 May 2020 17:03
URI: https://eprints.nottingham.ac.uk/id/eprint/46911

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