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在束箔光谱中,我们用波片和线偏振器测量光的偏振态,因此其实验结果是否精确直接与波片相角测量精度有关。下面可以看到,我们采用的定标方法与使用双折射率仪和巴俾涅补偿器的方法相比,有测量方便、精度较高的特点,并且可以测定波片在各种波长下的相角。我们曾对一块进口的1/4λ波片(MELLES GILOT公司生产,型号为02 WRM
In the beam foil spectrum, we measure the polarization state of the light with a wave plate and a linear polarizer. Therefore, whether the experimental result is accurate or not is directly related to the measurement accuracy of the phase angle of the wave plate. As can be seen below, the calibration method we use compared with the method using the birefringence and the Babylonia compensator has the advantages of convenient measurement, high accuracy, and can measure the phase of the wave plate at various wavelengths angle. We have an imported 1 / 4λ wave plate (MELLES GILOT company, model 02 WRM