Four dimensional phase unwrapping of dynamic objects in digital holography

Gili Dardikman, Gyanendra Singh, Natan T. Shaked*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present a new four-dimensional phase unwrapping approach for time-lapse quantitative phase microscopy, which allows reconstruction of optically thick objects that are optically thin in a certain temporal point and angular view. We thus use all four dimensions of the dynamic quantitative phase profile acquired, including the angular dimension and the temporal dimension, in addition to the x-y dimensions. We first demonstrate the capabilities of this algorithm on simulative data, enabling the quantification of the reconstruction quality relative to both the ground truth and existing unwrapping approaches. Then, we demonstrate the applicability of the proposed four-dimensional phase unwrapping algorithm by experimentally capturing a dual-angular dynamic off-axis hologram with simultaneous recording of two angular views, using multiplexing of two off-axis holograms into a single multiplexed hologram.

Original languageEnglish
Pages (from-to)3772-3778
Number of pages7
JournalOptics Express
Issue number4
StatePublished - 19 Feb 2018


FundersFunder number
Horizon 2020 European Research Council
Horizon 2020 Framework Programme678316
H2020 European Research Council
European Research Council


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