迈克尔逊干涉仪移去补偿板的异常现象研究

Research on Abnormal Phenomenon for Michelson Interferometer Removing Compensating Plate

从移去补偿板后的迈克尔逊干涉仪产生的附加光程差出发,对反射镜移动方向异常的现象进行研究,推导出临界点位置变化的公式,得到一种测量补偿板折射率的实验方案。实验结果得出:补偿板的折射率n=1.597,与玻璃材料的实际折射率相符,表明所采取的实验方案正确、可行。

From the additional optical path after removing compensating plate for Michelson interferometer,the abnormal phenomenon for moving direction of reflecting mirror（M1） is analyzed.The formula of location of the critical point is derived.An experimental program for measuring compensating refractive index is obtained.The compensating refractive index is n=1.597 is derived according to experimental results,which agrees with the actual refractive index of glass.It is shown that the theory and experimental program is correct and feasible.