Minimization of Surface Reflectivity
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United States of America Patent
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app pub date -
May 15, 2012
filing date -
Nov 5, 2007
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Abandoned
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Abstract
Apparatuses and methods are provided for processing a surface of a substrate. The substrate may have a surface pattern that exhibits directionally and/or orientationally different reflectivities relative to radiation of a selected wavelength and polarization. The apparatus may include a radiation source that emits a photonic beam of the selected wavelength and polarization directed toward the surface at orientation angle and incidence angle selected to substantially minimize substrate surface reflectivity variations and/or minimize the maximum substrate surface reflectivity during scanning. Also provided are methods and apparatuses for selecting an optimal orientation and/or incidence angle for processing a surface of a substrate.
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