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Full-field optical coherence tomography in a balanced detection mode

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Abstract

We discuss balanced time-domain full-field optical coherence tomography (FF-OCT) realized in a Mach–Zehnder configuration. The balanced detection scheme and spatial phase shifting allow single-shot acquisition and reconstruction in FF-OCT. Combined with a 2D quadrature signal-based demodulation technique applying the Riesz transform, previously illustrated for a dual-shot temporal phase shifting in FF-OCT, we demonstrate the concept for single-shot spatial phase shifting. The monitoring of dynamic processes by time-domain FF-OCT is enabled by this approach. The advantage of single-shot acquisition consists of having no failure due to phase changes over time. However, it demands an accurate registration of both spatially shifted interferograms.

© 2018 Optical Society of America

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Supplementary Material (2)

NameDescription
Visualization 1       Monitoring the micro-crystallization in a phase-change material (sodium-acetate), applied between two microscopic cover slides, by single-shot FF-OCT.
Visualization 2       Monitoring of micro-particles dynamics within a microfluidics channel by balanced detection FF-OCT.

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