Subrecoil cooling of atoms with a nondegenerate ground state
Matisov B. G. , Grigorenko I. A. , Mazets I. E.
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.