杨氏干涉实验中双孔的振动对衬比度的影响  

The Influence of the Vibration of Double Holes on the Contract Ratio in Young′s Interference Experiments

作　　者：骆素华[1] 姜向前[1] LUO Suhua;JIANG Xiangqian(School of Physics,Institute of Harbin Technology,Harbin,Heilongjiang 150001)

机构地区：[1]哈尔滨工业大学物理学院,黑龙江哈尔滨150001

出　　处：《物理通报》2024年第7期105-107,112,共4页Physics Bulletin

基　　金：教育部新工科项目资助,项目编号:E-SXWLHXLX20202605。

摘　　要：研究了杨氏干涉实验中双孔的振动对衬比度的影响.利用复振幅叠加方法给出了当两个孔做振动方向相反的简谐振动时一对双孔对任一场点、任意时刻的光强表达式,进而给出双孔做简谐振动时双孔的分布函数.利用分布函数得到干涉场的稳态分布,由光场的稳态分布得到衬比度,发现衬比度随位置呈一个振幅衰减的拉比振荡形式.In this paper we studied the effect of the vibration of double holes on the contract ratio in Young′s interference experiments.By means of the complex amplitude superposition method,the light intensity expression at any point and at any moment of the harmonic vibration is presented when the two holes do the harmonic vibration with opposite vibration directions.Using the distribution function,the steady-state distribution of the interference field is obtained,and the contrast ratio was also obtained from the steady-state distribution of the light field.It is found that the contrast ratio is in a Rabi oscillation form of the amplitude decay with position.

关 键 词：杨氏干涉 衬比度 拉比振荡 

分 类 号：O436.1[机械工程—光学工程]