用相因子判断法分析双缝的衍射场

Analysis of diffraction fields of two-slit on wave-front phase factor

用波前相因子判断法并考虑到孔径的影响分析双缝的衍射场。得出衍射场波前函数,像面衍射场的振幅和光强公式,并用数值模拟出像面衍射场振幅和光强分布,最后得出中央主极大的半角宽度。本研究为双缝衍射提供了一种新的分析方法。

In order to analyze diffraction fields of two-slit on the method of wave-front phase factors and considering of the influence of limited aperture. We have analyzed out wave-front function of the diffraction fields of two-slit. The amplitude and the length strength parameter distribution phase plane are obtained. Finally, the half-angle-width of maximum value in the center is given. This study may further provide a theoretical foundation to analyze two-slit diffraction.