| 摘要 |
A method and device for determining the intensity and phase distribution of a coherent light beam, in a plane, including measuring the intensity Ii, i=1 . . . N, of the beam, in N planes, N>=3, having the plane wherein intensity and phase distribution is to be determined, choosing, for plane i=1, an initial phase matrix phi1 and calculating a complex amplitude matrix, by term-wise multiplying the phase matrix eiphi1 by the corresponding amplitude matrix A1, for each plane j>1: determining a propagated complex matrix B'j from the measured amplitude matrix Aj-1 of plane j-1 and the phase matrix phi of plane j-1, extracting, from B'j, a phase matrix of plane j, and iterating the method up to convergence, with j=1 when j-1=N. |
