The diffraction image will not change, because the factors that determine the diffraction image are wavelength and distance, so increasing the light intensity will not change the diffraction image and the light intensity distribution curve will not change.

Diffraction redistributes light intensity in space. Measuring the relative change of light intensity with photoelectric elements is one of the methods to measure light intensity, and it is also a common method for optical precision measurement.

Extended data:

In optics, it is discussed that the sum of complex amplitudes produced by two complementary screens at a certain point in the diffraction field is equal to the complex amplitude at that point when light waves propagate freely by using Babinet principle. The relationship between the three fields given by Babinet's principle is a complex amplitude relationship, in which the phase difference plays a role rather than the relationship between the three light intensities. It cannot be considered that if the diffraction intensity of one screen is bright somewhere, then the diffraction intensity of the complementary screen must be dark there.

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