利用改进的迈克耳孙干涉仪测量空气折射率MEASUREMENT OF AIR REFRACTIVE INDEX BY USING THE IMPROVED MICHELSON INTERFEROMETER
秦珠,廖怡,戴海涛,王立英
摘要(Abstract)：
在光学平台上搭建迈克耳孙干涉光路,在一光路中加入一透明玻璃气室,通过改变气室内的压强来观察条纹"吞吐"数量,就可以测定空气折射率。本实验通过一根细软管将光路中的玻璃气室与一大气瓶相连接,在不影响实际光路长度的基础上,很大程度上实现将传统的小气室改造放大。另外,采用压力传感器和温度传感器测量气室内的压强和温度,使压强测量结果更加灵敏精确,并实现了对气室内温度的实时监测。利用改进后的迈克耳孙干涉仪测量空气折射率,使实验过程中压强和条纹变化缓慢且稳定,极大提高了实验的灵敏度和测量精度。
关键词(KeyWords)： 迈克耳孙干涉仪;空气折射率;大气室
基金项目(Foundation): 国家自然科学基金(51701138);; 天津市自然科学基金(17JCQNJC02800,16JCYBJC17200);; 天津大学校级实验室建设与管理改革重点项目(LAB2016-21)
作者(Author): 秦珠,廖怡,戴海涛,王立英
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