相位恢复算法研究进展

Research progress in phase recovery algorithms

相位恢复技术是波前重构技术的一个重要分支,重构的结果只取决于测量平面光强的分布,相比于其他的波前重构方法,相位恢复技术具有不需要在光路中添加额外硬件、光路简单、对光路环境的要求低、抗干扰能力强等优点,在光束整形、激光光束净化和干涉成像等领域有着非常广阔的应用前景。相位恢复的精度及速度是评价相位恢复技术的主要准则,此领域目前文献比较繁杂,本文梳理了相位恢复算法的发展脉络,围绕相位恢复算法的收敛精度与收敛速度等核心问题,系统的介绍了迭代及光强相位恢复算法的相关研究进展,并且对相位恢复算法的发展前景进行了展望。

Phase recovery technology is an important branch of wavefront reconstruction technology where the result of reconstruction only depends on the distribution of light intensity in the measurement plane.Compared with other wavefront reconstruction methods,phase recovery technology has the advantages of no additional hardware in the optical path,simple optical path,low requirements on the optical path environment and high interference immunity and has very broad application prospect in the fields of beam shaping,laser beam purification and interference imaging.The accuracy and speed of phase recovery is the main criteria for evaluating phase recovery technology.At present,the literature in this field is relatively complicated.In this paper,the development of the phase recovery algorithm is summarized.The core issues of the convergence accuracy and convergence speed of the phase recovery algorithm are introduced,a systematic introduction of the relevant research progress of iterative and light intensity phase recovery algorithms are presented,and an outlook on the development prospects of phase recovery algorithms is given.