moving heat sourse (laser) in ansys

hi everybody ,

i m quite new wd the ansys ,and was trying to simulate a problem of moving heat sourse  (laser )

laser is having a gaussian beam distribution and has to move wd some velocity over a face of the plate .how could i model heat distribution of the laser and how coulad i move it wd some velocity.. 

i hope i m clear,plz help me out.