The present invention provides a laser apparatus including a transmission-variable mirror and a method for forming a semiconductor device using the apparatus. For crystallizing an amorphous semiconductor film by irradiation of laser beams, a top surface and a back surface of the amorphous semiconductor...http://www.google.com.au/patents/US7456371?utm_source=gb-gplus-sharePatent US7456371 - Laser apparatus and laser annealing method
