Open AccessTransport of intensity phase imaging from multiple intensities measured in unequally-spaced planes
Author(s) -
Bin Xue,
Shiling Zheng,
Linyan Cui,
Xiangzhi Bai,
Fugen Zhou
Publication year - 2011
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.19.020244
Subject(s) - intensity (physics) , phase retrieval , optics , phase (matter) , light intensity , physics , generalization , computational physics , fourier transform , mathematics , mathematical analysis , quantum mechanics
A method based on the transport of intensity equation (TIE) for phase retrieval is presented, which can retrieve the optical phase from intensity measurements in multiple unequally-spaced planes in the near-field region. In this method, the intensity derivative in the TIE is represented by a linear combination of intensity measurements, and the coefficient of the combination can be expressed by explicitly analytical form related to the defocused distances. The proposed formula is a generalization of the TIE with high order intensity derivatives. The numerical experiments demonstrate that the proposed method can improve the accuracy of phase retrieval with higher-order intensity derivatives and is more convenient for practical application.