用迈克尔逊干涉仪测量He-Ne激光波长的测量不确定度分析  

Measurement Uncertainty Evaluation to the Experiment of Wavelength Measurement of He-Ne Laser with a Michelson Interferometer

作　　者：王潮[1] 李霄洋 王丽香[1] 

机构地区：[1]北京工业大学,北京100024

出　　处：《大学物理实验》2014年第6期103-105,共3页Physical Experiment of College

摘　　要：针对迈克尔逊干涉实验中测出的He-Ne激光的波长值总是比真实值偏大的问题,分析了用迈克尔逊干涉仪测量He-Ne激光波长时的实验误差来源,发现实验光路调整的不理想以及仪器读数装置中残留的螺纹空程差是导致λ值偏大的主要原因。在此基础上提出了相应的改进办法,并且对测量不确定度进行了合理的估算。In this paper the error source of the measurement of the wavelength of He-Ne laser with a Michelson interferometer is analyzed,especially aim to the problem that the measurement result is usually larger than the true value of the wavelength. We found that the main error comes from the defect in the light system and the backlash error remained in the Michelson interferometer. An improving method is put forward and the measurement uncertainty is reasonably evaluated.

关 键 词：迈克尔逊干涉实验 不确定度 螺纹空程差 

分 类 号：O4-34[理学—物理]