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SCANNING INTERFEROMETRY FOR THIN FILM THICKNESS AND SURFACE MEASUREMENTS
SCANNING INTERFEROMETRY FOR THIN FILM THICKNESS AND SURFACE MEASUREMENTS
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机译:薄膜厚度和表面测量的扫描干涉法
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摘要
A method including: providing a low coherence scanning interferometry data for at least one spatial location of a sample having multiple interfaces, wherein the data is collected using a low coherence scanning interferometer having an illumination geometry and an illumination frequency spectrum, and wherein the data comprises a low coherence scanning interferometry signal having multiple regions of fringe contrast corresponding to the multiple interfaces; and determining a distance between at least one pair of interfaces based on a distance between the corresponding regions of fringe contrast and information about the illumination geometry.
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