Abstract- In order to get a short attosecond pulse,we solved 1D Schrödinger equation  for a helium ion. By Applying the forier transformation of the induced dipole acceleration , we succeed to depict high order harmonics for a laser field with the first parametrs. In this method, by considering the initial wave equation as the superposition of the ground state  and the excited state , and then,by varying the laser field intensities,we created a continuous spectrum. By carefully controlling the intensity parameters, spectral width and efficiency of the harmonics increases. Finally, an intense, single attosecond pulses is obtained