发明授权
US07791732B2 Method and apparatus for angular-resolved spectroscopic lithography characterization 有权
用于角分辨光谱光刻特征的方法和装置

Method and apparatus for angular-resolved spectroscopic lithography characterization
摘要:
An apparatus and method to determine a property of a substrate by measuring, in the pupil plane of a high numerical aperture lens, an angle-resolved spectrum as a result of radiation being reflected off the substrate. The property may be angle and wavelength dependent and may include the intensity of TM- and TE-polarized radiation and their relative phase difference.
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