Doughnut mode magneto-optical trap

Snadden, M.J., Bell, A.M. , Clarke, R.B.M., Riis, E. and McIntyre, D.H. (1997) Doughnut mode magneto-optical trap. Journal of the Optical Society of America B: Optical Physics, 14(3), pp. 544-552. (doi:10.1364/JOSAB.14.000544)

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We have developed a magneto-optical trap that is well suited for high-resolution spectroscopy. It uses a combination of doughnut mode (Laguerre–Gaussian TEM<sub>01</sub>) and TEM<sub>00</sub> cooling beams rather than the usual TEM<sub>00</sub> cooling beams. This configuration allows us to tailor the intensity distribution within the magneto-optical trap such that the atoms are cooled from the background vapor by the intense TEM<sub>01</sub> beams and then trapped by the weak TEM<sub>00</sub> beams. This greatly reduces the magnitude of the ac-Stark shift and the line broadening induced by the cooling lasers, allowing high-resolution spectroscopy to be performed in the presence of the cooling beams.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Bell, Dr Angus
Authors: Snadden, M.J., Bell, A.M., Clarke, R.B.M., Riis, E., and McIntyre, D.H.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of the Optical Society of America B: Optical Physics
Publisher:Optical Society of America
ISSN (Online):1520-8540

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