Based on the accurate expression of light intensity at transverse plane, the propagation characteristics of monochromatic planar wave diffracted by small circular aperture are analyzed in this paper.
采用横截面上光强的精确表述，分析了单色平面波微小圆孔衍射后，其衍射光束的传输特性。
2
Since laser appeared, pure monochromatic coherent light sources of high intensity have been achieved. In many practical problems, there are miscellaneous Fresnel's diffraction calculations.