Cold atomic beam from an axicon trap

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Summary form only given. There are two methods to produce a cold atomic beam. One is to use effusive thermal atomic beam, which is decelerated by the force of a counterpropagating laser. The other is to use trapped atoms, which are ejected from magneto-optical trap. Recently, it is reported that an atomic beam has been produced using the second method. We also have produced pulsed cold atomic beam from an axicon trap. It is the simplest setup that employs only a single laser beam to trap the atoms in axicon. The experimental setup was performed with 85 rubidium atoms. To trap atoms, the counterpropagating laser through the hole at an apex is required. When blocking the counterpropagating laser, the trapped atoms are pushed to the hole. So, we could get a pulsed atomic beam. The accelerated atoms are collimated by transverse force from axial symmetric laser inside an axicon.