Image-based registration for synthetic aperture holography

Sehoon Lim, Kerkil Choi, Joonku Hahn, Daniel L. Marks, David J. Brady

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


High pixel count apertures for digital holography may be synthesized by scanning smaller aperture detector arrays. Characterization and compensation for registration errors in the detector array position and pitch and for phase instability between the reference and object field is a major challenge in scanned systems. We use a secondary sensor to monitor phase and image-based registration parameter estimators to demonstrate near diffraction-limited resolution from a 63.4 mm aperture synthesized by scanning a 5.28 mm subaperture over 144 transverse positions. We demonstrate 60 μm resolution at 2 m range.

Original languageEnglish (US)
Pages (from-to)11716-11731
Number of pages16
JournalOptics Express
Issue number12
StatePublished - Jun 6 2011
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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