精确设定瑞利干涉仪补偿器的偏转角

Accurate settlement of the compensation angle of the compensator in rayleigh interferometer

瑞利干涉仪是测量液体、气体折射率的精密仪器,但补偿器的偏转位置直接影响测量精度。从测量补偿器不同偏转角对应的光程差出发,对最佳补偿范围进行了测试,结果表明,补偿器的最佳初始位置与水平方向的夹角为30°,最大补偿角为5°。为瑞利干涉仪的准确测量提供了实验参数。

The Rayleigh interferometer is a precise instrument that can be used to survey the refractive index of liquid and gas. However, the deflection position of the compensator influence the accuracy of measurement directly. On the basis of testing a series of optical distance difference corresponding with the deflection angle of compensator, the article discussed the optimum compensation scope. The results indicate that the position with a deflection angle of 30 degrees from the horizontal direction is the best initial position of the compensator. The largest compensation angle of our experiment is 5 degree and the experiment offers the experimental parameters for accurate survey through the Rayleigh interferometer.