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A method for measuring the phase retardation and birefringence of crystallinequartz wave plate in the ultraviolet and visible spectrum is demonstrated usingspectroscopic ellipsometer. After the calibration of the crystalline quartzplate, the experimental data are collected by the photodetector and sent to thecomputer. According to the outputted data, the retardation can be obtained inthe range of 190 to 770 nm. With the retardation data, the birefringence forthe quartz can be calculated in the same spectrum with an accuracy of betterthan . The birefringence results enrich the crystalline quartz birefringencedata especially in the ultraviolet spectrum.

Phase Retardation and Birefringence of the Crystalline Quartz Plate in the Ultraviolet and Visible Spectrum