CHEN NANDIAN. Diffraction efficiency of sinusoidal grating and lamellar one with shallow groove[J]. Acta Optica Sinica, 1983, 3(1): 88
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The article describes the approximate relation between incident angle and diffraction efficiency of the perfectly conducting sinusoidal grating and the lamellar one. The analysis in the article starts with electromagnetic theory. Solving the boundary condition equation of electromagnetic field, we give some approximation in order to make the equation solved easily; as a result, their complicated relation can be obtained under certain circumstances.