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由于衍射相位元件可以灵活地控制光波波前，故被广泛地应用于光学系统中．到目前为止，衍射相位元件较多地用于光场横向分布的控制，如光束整形、阵列发生器等。但是，轴向光强控制在实际应用中也很重要，设计具有不同轴向光强调制功能的衍射相位元件已引起了大家的注意。我们
Since the diffraction phase element can flexibly control the optical wavefront, it is widely used in optical systems. To date, diffractive phase elements have been used more for the control of lateral distribution of light fields, such as beam shaping, array generators and the like. However, the axial light intensity control is also very important in practical applications. It has drawn people’s attention to design a diffraction phase element with different axial light intensity modulation functions. we