Single-exposure full-field multi-depth imaging using low-coherence holographic multiplexing

TL;DR

This paper introduces a novel low-coherence holographic multiplexing method enabling simultaneous multi-depth imaging in a single shot, facilitating efficient sectioned imaging of thick samples with distinct axial information.

Contribution

The work presents a new interferometric approach for single-acquisition multi-depth imaging using off-axis low-coherence holographic multiplexing, allowing rapid imaging of thick samples.

Findings

Successful demonstration of amplitude and phase imaging of optically thick samples.

Distinct off-axis interference fringes encode axial depth information.

Single-shot acquisition captures multiple slices simultaneously.

Abstract

We present a new interferometric imaging approach that allows for multiple-depth imaging in a single acquisition, using off-axis low-coherence holographic multiplexing. This technique enables sectioned imaging of multiple slices within a thick sample, in a single image acquisition. Each slice has a distinct off-axis interference fringe orientation indicative of its axial location, and the camera acquires the multiplexed hologram containing the different slices at once. We demonstrate the proposed technique for amplitude and phase imaging of optically thick samples.