机构地区: 深圳大学
出 处: 《大学物理实验》 2013年第1期40-42,共3页
摘 要: 从双缝干涉的简单理论出发,将光栅分解为许多组双缝,利用人们熟知的干涉条纹间距公式导出Talbot成像位置,结论与Talbot效应公式一致。并由实验证实,在(2 m 1)d2/λ(m为正整数)的位置得到的为横向平移d/2的周期像,并非原周期性物的负反差像。 Based on double-slit interference theory,the grating's Talbot effect was explained by decomposing the grating into many double-slits.The whole process only used the formula of interference fringe spacing and the result is agreed with the Talbot effect.Furthermore,through the experiment,the conclusion can be drawn that the self-image of the periodic object is removed laterally d/2 at(2m-1)d2/ λ(m is positive integer),downstream the object,not the object of intensity distribution reversal.