LASER ANNEALER AND LASER ANNEALING METHOD

PROBLEM TO BE SOLVED: To perform laser annealing by using a laser beam with a uniform intensity distribution. SOLUTION: This invention relates to a laser annealer 1 equipped with: a laser oscillator 11; a beam homogenizer 13 which divides the laser beam into two or more; a condensing means for piling the divided laser beams into one; and a placement table installing a substrate by which the piled laser beams are irradiated, wherein two or more slit boards 16, 17 are arranged between the condensing means and the placement table, and a length in the longitudinal direction of each opening 161, 171 of each slit board is constituted to be shorter than a length in the longitudinal direction of the laser beam and to sequentially become shorter as approaching the placement table. COPYRIGHT: (C)2008,JPO&INPIT