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Loading of a Rb magneto-optic trap from a getter source | | Umakant D. Rapol
; Ajay Wasan
; Vasant Natarajan
; | | Date: |
6 Apr 2002 | | Journal: | Physical Review A 64, 023402 (2001) DOI: 10.1103/PhysRevA.64.023402 | | Subject: | Atomic Physics; Optics | physics.atom-ph physics.optics | | Abstract: | We study the properties of a Rb magneto-optic trap loaded from a commercial getter source which provides a large flux of atoms for the trap along with the capability of rapid turn-off necessary for obtaining long trap lifetimes. We have studied the trap loading at two different values of background pressure to determine the cross-section for Rb--N$_2$ collisions to be 3.5(4)x10^{-14} cm^2 and that for Rb--Rb collisions to be of order 3x10^{-13} cm^2. At a background pressure of 1.3x10^{-9} torr, we load more than 10^8 atoms into the trap with a time constant of 3.3 s. The 1/e lifetime of trapped atoms is 13 s limited only by background collisions. | | Source: | arXiv, physics/0204022 | | Services: | Forum | Review | PDF | Favorites | |
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