An apparatus for zone melting a thin semiconductor film comprises an first laser for heating the thin semiconductor film, at least one additional laser for heating an insulating substrate, a first temperature detecting device for detecting the temperature of a melted portion of the thin semiconductor...http://www.google.com.au/patents/US5304357?utm_source=gb-gplus-sharePatent US5304357 - Apparatus for zone melting recrystallization of thin semiconductor film
