A one-dimensional array of three spatially coupled solid state lasers is investigated. It is shown that the periodic synchronization, chaotic synchronization and loss of synchronization in laser intensities occur when the coupling between lasers is changed. Meanwhile, the laser light is changed from partially coherent, perfect coherent, to partially coherent again and finally incoherent. The phase differences between lasers show generalized synchronization and loss of synchrOriization as the coupling is changed.