Structured transmittance illumination coherence holography

TL;DR

This paper introduces STICH, a novel coherence holography method that reconstructs complex coherence functions using structured illumination and single-pixel detection, eliminating the need for interferometry.

Contribution

The paper presents a new interferometry-free approach for coherence holography using structured transmittance patterns and intensity correlation measurements.

Findings

Successful simulation validation of the STICH technique.

Reconstruction of complex coherence functions without interferometric setups.

Potential for simplified and more accessible coherence holography applications.

Abstract

The coherence holography offers an unconventional way to reconstruct the hologram where an incoherent light illumination is used for reconstruction purposes, and object encoded into the hologram is reconstructed as the distribution of the complex coherence function. Measurement of the coherence function usually requires an interferometric setup and array detectors. This paper presents an entirely new idea of reconstruction of the complex coherence function in the coherence holography without an interferometric setup. This is realized by structured pattern projections on the incoherent source structure and implementing measurement of the cross-covariance of the intensities by a single-pixel detector. This technique, named structured transmittance illumination coherence holography (STICH), helps to reconstruct the complex coherence from the intensity measurement in a single-pixel detector without an interferometric setup and also keeps advantages of the intensity correlations. A simple experimental setup is presented as a first step to realize the technique, and results based on the computer modeling of the experimental setup are presented to show validation of the idea.