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Optics Communications

Magneto-optical trap for sodium atoms operating on the D1 line

J.P. Flemming, A M Tuboy, D. M. B. P. Milori, Luís Gustavo Marcassa, Sérgio Carlos Zílio, Vanderlei Salvador Bagnato

Published Feb 1, 1997• 23 citations
Publisher
DOI
10.1016/s0030-4018(96)00660-8

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The role of repumping in the magneto-optical trap (MOT) has often been seen as a necessary evil, requiring the introduction of either an electro-optical modulator or extra laser.1,2 However, repumping can be exploited to improve the performance of the MOT,3 or to study further the behavior of such a trap. We report results of a modified MOT using for repumping the D1 transitions 3S1/2 F = 1 to 3Pl/2 F = 1 and F = 2. Because these wavelengths are well displaced from the usual (D2) repump wavelengths, the direct repump influence on the trapping and cooling laser interaction should be significantly reduced. We also expect further possibilities for cold-atom spectroscopy within the MOT. The possibility of a dark trap with this repumping transition has been suggested.3