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24 November 2009Shape measurement of microscopic object by using digital lateral shearing holography
A phase reconstruction method which is combined digital holography with digital lateral shearing interferometry has
been analyzed and verified by computer simulation. The results show that one-dimensional phase unwrapping procedure
must be applied to the original reconstructed phase field before lateral shearing. An effective method to eliminate the
linear term of the shearogram automatically have been proposed and demonstrated. Moreover, the simulation results also
show that the maximum of the difference between two adjacent pixels of the shearogram must be less than 2π in order to
reconstruct phase map correctly. If the value is more than 2π, an adoptable method is padding zeros to the recorded
hologram appropriately.
Xiufa Song andBaoqun Zhao
"Shape measurement of microscopic object by using digital lateral shearing holography", Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 751322 (24 November 2009); https://doi.org/10.1117/12.838009
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Xiufa Song, Baoqun Zhao, "Shape measurement of microscopic object by using digital lateral shearing holography," Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 751322 (24 November 2009); https://doi.org/10.1117/12.838009