Phase retrieval based on improved GS algorithm

In this paper, the GS algorithm used for phase retrieval is elaborated, and the application scope of this algorithm is expanded, no longer confined to the known pupil surface and the focal plane intensity. In the simulation, two vertical axial section of the beam are chosen, where the optical power is detected to retrieve several kinds of common phase aberration based on GS algorithm. An improved GS algorithm is brought forward, which adds two weight coefficients in the circulation. The range of the two weight coefficients is given, too. Results of the simulation show that both the speed and precision of GS algorithm are improved.