中文摘要：

提出了一种计算透射式矩形相位光栅衍射场的简便方法，计算并分析了透射式矩形相位光栅的衍射光谱，给出了相位光栅的衍射光谱与光栅材料的折射率、光栅厚度和入射波长的关系，得到了把衍射光能量集中到1级光谱的条件；并在相位光栅的应用方面作了探讨．

英文摘要：

：A simple method to calculate the diffraction field of the transmission rectangle phase grating is proposed. The diffraction spectrum of the transmission phase grating is analyzed. It is shown that the diffraction field of the transmission phase grating is closely related to the grating＇ s optical thickness and the incident wavelength. A condition under which the diffraction energy will move from zero order to the first order diffraction spectrum is obtained. The discussion on the passable applications of the grating is made.