Single-exposure phase-shifting digital holography using a random-complex-amplitude encoded reference wave

提出了一种改进的单次曝光相移数字全息术。 改进了物波复振幅的求取算法。 在该算法中，参考波不是随机相位，而是随机复振幅。 因此，该算法使用参考波的适当幅度信息。 在此基础上，对采用随机复振幅编码参考光的单次曝光相移数字全息中合适的参考光进行了实验研究。 虽然参考波是广义的，但重建图像的质量取决于参考波，当参考波满足一定条件时，用这种方法无法得到重建图像。 在给出确定性条件后，利用散斑特性研究了合适的条件。 实验结果证实了所提出的方法。

The improved single-exposure phase-shifting digital holography using a random-phase reference wave is proposed. The algorithm for obtaining a complex amplitude of an object wave is improved. In the proposed algorithm, the reference wave is treated as not a random-phase but a random-complex-amplitude. Therefore, the algorithm uses proper amplitude information of the reference wave. Furthermore, the appropriate reference wave in single-exposure phase-shifting digital holography using a random-complex- amplitude encoded reference wave is experimentally investigated. Although the reference wave is generalized, the quality of reconstructed images depends on it. When the reference wave satisfies a certain condition, reconstructed images cannot be obtained in this method. After the certain condition is presented, the appropriate condition is studied using a speckle property. Experimental results are given to confirm the proposed method.