提出用Mach-Zehnder干涉仪两步记录制作具有多 级衍射的全息光栅方法。详细描述这种方法的原理，并提供了光栅样品的傅里叶谱及用这 种多级衍射光栅实现图像多重的实验结果。

In this paper,a method of holographic grating with multiorder diffraction ma de by using Mach-Zehnder interferometer in two steps is presented.The principle of this method is interpreted in detail.The Fourier spectrum of this grating sa mple and the experment result of image multiplication by using multiorder diffra tion grating are also presented.