It is pointed out that the linewidth error has very large effect of BOEs diffractive efficiency.
指出线宽误差对二元光学元件衍射效率影响较大。
The error of scalar diffraction theory is very large for DVD, and vector diffraction theory must be employed to get correct result.
对于DVD，标量理论的误差已经很大，要得到准确的结果就必须采用矢量衍射理论。
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