关键词: 光栅常数, 衍射, 相移, 干涉

Abstract: A new way to measure grating constant is discussed based on phase shift between adjacent diffraction light caused by the transverse movement of the grate, which results in a visible change in their interference effect Also conditions are specified to accomplish the measurement and a brief comparison is given in the end.

Key words: grating constant, diffraction, phase shift, interference