METHOD FOR CHARACTERIZING A STRUCTURE ON A MASK AND DEVICE FOR CARRYING OUT SAID METHOD
A method is provided for characterizing a mask having a structure, comprising the steps of: -illuminating said mask under at least one illumination angle with monochromatic illuminating radiation, so as to produce a diffraction pattern of said structure that includes at least two maxima of adjacent...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A method is provided for characterizing a mask having a structure, comprising the steps of: -illuminating said mask under at least one illumination angle with monochromatic illuminating radiation, so as to produce a diffraction pattern of said structure that includes at least two maxima of adjacent diffraction orders, -capturing said diffraction pattern, -determining the intensities of the maxima of the adjacent diffraction orders, -determining an intensity quotient of the intensities. A mask inspection microscope for characterizing a mask in conjunction with the performance of the inventive method is also provided. |
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