作者: Koichiro Tanaka , Shunpei Yamazaki , Naoto Kusumoto
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摘要: It is an object of the present invention to provide a laser irradiation apparatus which can manufacture homogenously crystallized film by varying energy intensity beam in forward and backward directions irradiation. A comprises oscillator means for wherein obliquely incident into surface, scanned relative varied accordance with scanning direction. Further, continuous wave solid-state laser, gas or metal laser. pulsed having repetition frequency 10 MHz more also be used.