Self-synchronizing scheme for high speed computational ghost imaging

TL;DR

This paper introduces a self-synchronizing scheme for high-speed computational ghost imaging, enabling faster acquisition by eliminating the need for complex synchronization techniques, demonstrated with a 20kHz spatial light modulator and a high-speed photodiode.

Contribution

A novel self-synchronization method that simplifies setup and enhances speed in computational ghost imaging systems.

Findings

Achieved 14 times faster acquisition than current state-of-the-art methods.

Implemented a 20kHz spatial light modulator with a high-speed photodiode.

Demonstrated effective self-synchronization in high-speed ghost imaging.

Abstract

Computational ghost imaging needs to acquire a large number of correlated measurements between reference patterns and the scene for reconstruction, so extremely high acquisition speed is crucial for fast ghost imaging. With the development of technologies, high frequency illumination and detectors are both available, but their synchronization needs technique demanding customization and lacks flexibility for different setup configurations. This letter proposes a self-synchronization scheme that can eliminate this difficulty by introducing a high precision synchronization technique and corresponding algorithm. We physically implement the proposed scheme using a 20kHz spatial light modulator to generate random binary patterns together with a 100 times faster photodiode for high speed ghost imaging, and the acquisition frequency is around 14 times faster than that of state-of-the-arts.