提出一种基于圆偏振光干涉的相移数字全息术，该技术利用1/4波片产生左旋圆偏振的参考光和右旋圆偏振的物光，通过精确旋转放置在CCD前的偏振片，依次改变物光与参考光间的相位差，获得四幅相移数字全息图。数值模拟分析和光学实验结果表明该技术能够有效地去除数字全息图再现像中的零级和共轭像，再现图像质量好。

Phase-shifting digital holography based on circular polarized light interference is proposed. It generates the object beam with right-rotated circular polarization and the reference beam with left-rotated circular polarization by quarter wave plate, successively changing the phase difference between the object beam and the reference beam by accurately rotating the polarizer located in front of the CCD and acquiring four digital holograms with corresponding phase changes. Numerical simulation and analysis and optical experimental results demonstrate that the method presented above can effectively remove the zero-order and conjugated images and has good-quality reconstructed image.