This paper studies the effect of the wave function parameters on the density of  87Rb atoms laser. The density equation has been derived through the use of Thomas-Fermi approximation, Green function and the stationary phase approximations. We investigated the change of density behavior with the effect of Rabi frequency, period of output coupling and detuning frequency. Consequently the number of released atoms can be controlled by determining the suitable parameters necessary for producing the best atom laser beam.

The number of remaining atoms in the 87