牛顿环干涉实验的改进及调节技巧

在光学实验平台上做牛顿环的干涉实验时,得到理想的干涉图样的关键是要求各光学元件共轴等高,当光轴严格垂直于牛顿环仪、与光轴成45°的平玻璃片的反射率和透射率均达到50%时(用迈克耳孙干涉仪中的背面镀有银膜的分光板代替平玻璃片,可以达到反射率和透射率各为50%这一要求),干涉图样的实验效果最好.在干涉图样的调节过程中,可以先调读数显微镜和牛顿环仪共轴等高,再调光轴垂直于牛顿环仪,然后再插入分光板(或者先粗调读数显微镜、分光板和牛顿环仪共轴等高,再调光轴垂直于牛顿环仪),最后调节光轴和分光板成45°,这样就可快速得到理想的干涉图样.

The Adjusted Skill and Improve on Newton Ring Experment

The key to adjusting the interference pattern in Newton rings experiment is a shared axis and an identical height of the optical apparatus.The interference pattern is most desirable in effect when the optical axis is strictly in vertical relation with the Newton interferometer,and when the refractive index and reflective index of the plate glass in a 45 degree angle both attain 50%.The procedure to achieve this is 1) to adjust the microscope and the Newton interferometer so that they share one axis and an i...