Photoelectric ptychographical imaging based on pre-known amplitude information constraint

doi:10.7523/j.issn.2095-6134.2017.05.003

Abstract

Abstract: A visible light ptychography imaging method based on pre-known surrounding amplitude information is proposed,in order to effectively improve accuracy and robustness of the reconstruction.The method employs a known standard object as priori information which surrounds the sample.Ptychography scans the sample and the pre-known surrounding information,and then introduces them into the iterative algorithm.Finally a high quality reconstruction result is achieved after several iterations.With the simulations and by setting up the optical system,the experiments on different samples are carried out to further study its validity and versatility.In addition,the method shows a good anti-noise performance and anti-probe-offset capability.Due to the pre-known information constraint,a high quality reconstruction is completed without additional cost.The method also maintains the superiority of the traditional ptychography.This method is analyzed and proved to be simple-to-operate,steady,and versatile.The ptychography based on the pre-known information constraint has a quite promising practical value.

Key words: ptychography imaging, pre-known amplitude, coherent diffraction, iterative engine

CLC Number:

O439

WANG Zhibo, ZHANG Jun, LI Tuo, SHI Yishi. Photoelectric ptychographical imaging based on pre-known amplitude information constraint[J]. , 2017, 34(5): 543-550.

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