Abstract
The automatic phase aberration compensation of off-axis digital holographic microscopy is studied theoreticaly and experimentaly.Firstly,the average gradient auto-focus function is used to achieve the optimal reconstruction distance of the digital hologram recorded by CCD.After numerical apodization and spatial frequency filtering,the numerical reconstruction is performed by the product of the hologram with modified digital reference wave.Finally,with the automatic phase aberration compensation of image plane,the accurate phase distribution is achieved.This method uses only one single digital hologram and can retrieve automatically and rapidly the real phase distribution of the object.
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