四分之一波片相位延迟量的简易测量

A simple measurement for the phase retardation of quarter-wave plate

目的提出一种标定1/4波片相位延迟量的简易方法。方法利用全自动偏振光实验系统,在两偏振片平行的情况下,测量干涉的最大和最小值。结果实验结果与理论预期较为吻合,误差在许可的范围内。结论该方法具有光路简明直观、实验步骤少、易于操作的特点,可以在多数普通院校推广实施。

Aim To introduce a method for calibrating the phase retardation of wave plate. Methods A full automatic polarized light system is adopted to measure the maximum and minimum light intensity of interference under the circumstance of two parallel polarizers. Results Experimental result tallies with the theoretical prediction and the error range is allowable. Conclusion This method features simple and intuitive light path,less laboratory procedure and easy performance,so it can be popularized in the most general colleges.