Patent ID: 7279721
Filing Date: 2007-10-09
Classification: B23K,H01L

Abstract:
1. A thermal processing system, comprising: a stage configured to receive a substrate thereon to be thermally processed; a first source of a first beam of infrared radiation having a wavelength of at least 1.2 μm; first optics for directing said first beam to form an elongated first beam of said infrared radiation incident upon said substrate, said elongated first beam having a first dimension extending along a first axis and a second dimension larger than said first dimension extending along a second axis transverse to said first axis; a second source of a second beam of lower-wavelength radiation having a wavelength of less than 1 μm; second optics for focusing said second beam to form an incident second beam of lower-wavelength radiation upon said substrate which surrounds and encompasses said elongated first beam; and a translation mechanism to scan said elongated first beam and said incident second beam with each other along said first axis relative to said stage so that said incident second beam continues to encompass said elongated first beam.