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

Li, Y.; Wu, J.; Feng, G.; Nute, J.; Piano, Samanta; Hackerm�ller, L.; Ma, J.; Xiao, L.; Jia, S.

Abstract

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.

Citation

Li, Y., Wu, J., Feng, G., Nute, J., Piano, S., Hackermüller, L., Ma, J., Xiao, L., & Jia, S. (2015). Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap. Laser Physics Letters, 12(5), Article 055501. https://doi.org/10.1088/1612-2011/12/5/055501

• Journal Article Type: Article
• Acceptance Date: Mar 11, 2015
• Publication Date: Mar 31, 2015
• Deposit Date: Oct 2, 2017
• Publicly Available Date: Oct 2, 2017
• Journal: Laser Physics Letters
• Print ISSN: 1612-2011
• Electronic ISSN: 1612-202X
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 5
• Article Number: 055501
• DOI: https://doi.org/10.1088/1612-2011/12/5/055501
• Keywords: degenerated Raman sideband cooling, lattice, detuning
• Public URL: https://nottingham-repository.worktribe.com/output/746331
• Publisher URL: http://iopscience.iop.org/article/10.1088/1612-2011/12/5/055501/meta
• Additional Information: Y Li et al 2015 Laser Phys. Lett. 12 055501
• Contract Date: Oct 2, 2017