Abstract: It was found that grating efficiency in short spectral range has unpredictable changes both under the alterations in groove geometry, groove frequency, angle of incidence and wavelength; and under replacement of reflectance, i.e. under the use of another coating material with the stand point of scalar theory. As is shown, this non-scalar effect becomes greatly apparent only for high-frequency gratings (up to 3600 g/mm) and includes two aspects. They are: (1) it is impossible to predict grating efficiency under the changing of coating material (without changes of all the other parameters) by multiplication on the ratio of coating material Fresnel reflectance; (2) optimum parameters (angle of incidence, groove depth, groove width for lamellar grating) found for one kind of coating material are not optimum for another. !7
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机译：摘要：发现在沟槽几何形状，沟槽频率，入射角和波长的变化下，短光谱范围内的光栅效率都有不可预测的变化。在更换反射率的情况下，即在使用具有标量理论立场的另一种涂层材料的情况下。如图所示，这种非标量效应仅在高频光栅（最大3600 g / mm）上变得非常明显，并且包括两个方面。它们是：（1）不可能通过乘以涂层材料的菲涅耳反射率来预测在涂层材料变化（不改变所有其他参数）下的光栅效率； （2）对一种涂料发现的最佳参数（入射角，凹槽深度，层状光栅的凹槽宽度）对另一种涂料不是最佳的。 ！7
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