Abstract:According to the increased demand for large-aperture silicon wafers, a transparent plate, used as a mask for patterning a silicon wafer, should be thoroughly measured for the high performance of the semiconductor chips. In the wavelength-tuning interferometry, the optical thickness of the large-aperture transparent plate can be precisely measured without destruction, but it is inevitable to avoid the occurrence of nonlinear errors by environmental factors. The nonlinearities generate uniform and nonuniform err… Show more
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