Open AccessMethod for estimating the axial intensity derivative in the TIE with higher order intensity derivatives and noise suppression
Author(s) -
R.W. de Bie,
Xiuhua Yuan,
Ming Zhao,
Li Zhang
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.008186
Subject(s) - intensity (physics) , noise (video) , derivative (finance) , light intensity , optics , phase (matter) , physics , computer science , artificial intelligence , quantum mechanics , financial economics , economics , image (mathematics)
It is an effective scheme to the phase retrieval for axial intensity derivative computing. In this paper, we demonstrate a method for estimating the axial intensity derivative and improving the calculation accuracy in the transport of intensity equation (TIE) from multiple intensity measurements. The method takes both the higher-order intensity derivatives and the noise into account, and minimizes the impact of detecting noise. The simulation results demonstrate that the proposed method can effectively reduce the error of intensity derivative computing.