Abstract

We present first results on the realization of a magneto-optical trap (MOT) for chromium atoms with repumping lasers on two intercombination lines. This demonstration shows that elements with a more complicated electronic structure than the alkaline, alkaline earth and noble gases can be trapped magneto-optically. Besides the general level structure (see figure 1) chromium has further interesting properties. The large magnetic moment (6 μ_B) and the isotopic composition (3 stable bosonic and one stable fermionic isotope with 9,5 % n.a.) are suitable for studies of quantum statistical effects in both Bose and Fermigases in steep magnetic traps. Furthermore, together with atom lithography, chromium has technological potential in nanostructure fabrication.

© 1998 IEEE