Home For authors Submission status Current Archive (English) Archive    Volumes 61-80    Volumes 41-60    Volumes 21-40    Volumes 1-20    Volumes 81-88       Volume 88       Volume 87       Volume 86       Volume 85       Volume 84       Volume 83       Volume 82       Volume 81 Search

VOLUME 82 | ISSUE 1 | PAGE 18 2D laser collimation of a cold Cs beam induced by a transverse B-field M. D. Plimmer, N. Castagna, G. Di Domenico, P. Thomann, A. V. Taichenachev+ *, V. I. Yudin+* Observatoire cantonal, 2000 Neuchâtel, Switzerland +Novosibirsk State University, 630090 Novosibirsk, Russia *Institute of Laser Physics SB RAS, 630090 Novosibirsk, Russia PACS: 32.60.+i Abstract We describe transverse collimation of a continuous cold cesium beam (longitudinal temperature 75 μK) induced by a two-dimensional, blue-detuned near-resonant optical lattice. The mechanism described for a lin--lin configuration is made possible by the application of a transverse magnetic field . The phenomenon described differs from grey molasses for which any small magnetic field degrades cooling, as well as from magnetically induced laser cooling in red-detuned optical molasses where there are no dark states. The lowest transverse temperature is experimentally found to vary as The collimated flux density shows a dip as a function of , the width of which is proportional to the cube root of the laser intensity, general features predicted by our semi-classical model. This technique provides a sensitive tool for cancelling transverse magnetic fields in situ at the milligauss level. Download PS file (GZipped, 314.3K)  |  Download PDF file (380.4K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.