Patent ID: 8288685

Claim:
A method of treating a substrate disposed on a stage, the method comprising: generating substantially monochromatic light having a wavelength between 190 nm and 950 nm with a power greater than 0.5 kW; focusing, with a series of lenses, the substantially monochromatic light to a line of radiation substantially collimated perpendicular to a surface of the substrate, the line of radiation having a full-width-at-half-maximum (â€œFWHMâ€) width between 3 Î¼m and 500 Î¼m and having a FWHM length longer than its width, wherein the series of lenses comprises a first lens, an intermediate lens, and a final lens, and wherein focusing the substantially monochromatic light comprises reducing the fast-axis divergence of light passing through the first lens to less than 0.1Â°; and translating the stage and the line of radiation relative to each other.