Reconstruction of complex-object using edge point referencing

For imaging complex-valued objects, generally digital holography is used. In holography, the requirement of a separate reference source could restrict its application. Investigating objects through recording multiple holograms demands a stable platform to keep the reference field the same. Without t...

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Bibliographic Details
Published in:Journal of optics (2010) 2020-05, Vol.22 (5), p.55601
Main Authors: Gautam, Surya Kumar, Kumar Singh, Rakesh, Narayanamurthy, C S, Naik, Dinesh N
Format: Article
Language:English
Subjects:
autocorrelation
complex object reconstruction
holography
interferometry
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Summary:For imaging complex-valued objects, generally digital holography is used. In holography, the requirement of a separate reference source could restrict its application. Investigating objects through recording multiple holograms demands a stable platform to keep the reference field the same. Without the reference field, one can obtain only the object autocorrelation term from the far-field intensity pattern. We propose a compact, robust, lensless and common path method to retrieve the complex object information directly from the object autocorrelation using edge point referencing where we control the field at a point located at the periphery of the beam illuminating the object. We show that the object field can be reconstructed and object dynamics can be monitored with high fidelity.
ISSN:2040-8978
2040-8986
DOI:10.1088/2040-8986/ab7e8b