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VOLUME 62 (1995) | ISSUE 6 | PAGE 466
Subrecoil cooling of atoms with a nondegenerate ground state
A new (double cascade) scheme is proposed for laser cooling of atoms by the method of velocity-selective, coherent, population trapping. This scheme makes it possible to cool the even-even isotopes of several elements to below the recoil limit. The atoms are subjected to a radiation-pressure force which precools the atomic ensemble and confines its cooled fraction. It is shown that there exists a regime in which the cooling efficiency approaches a constant nonzero value as the interaction time increases. © 1995 American Institute of Physics.