Complex-amplitude Fourier single-pixel imaging via coherent structured illumination

TL;DR

This paper introduces a novel complex-amplitude Fourier single-pixel imaging method using coherent structured illumination, enabling direct acquisition of both amplitude and phase of objects with high quality and stability.

Contribution

The paper presents a new CFSI technique that captures complex Fourier spectra with a single-pixel detector using structured illumination and inverse Fourier transform.

Findings

Successfully imaged various objects with high quality

Demonstrated stable and promising complex-amplitude imaging

Potential applications in optical metrology and biomedical science

Abstract

We propose a method of complex-amplitude Fourier single-pixel imaging (CFSI) with coherent structured illumination to acquire both the amplitude and phase of an object. In the proposed method, an object is illustrated by a series of coherent structured light fields which are generated by a phase-only spatial light modulator, the complex Fourier spectrum of the object can be acquired sequentially by a single-pixel photodetector. Then the desired complex-amplitude image can be retrieved directly by applying an inverse Fourier transform. We experimentally implemented this CFSI with several different types of objects. The experimental results show that the proposed method provides a promising complex-amplitude imaging approach with high quality and a stable configuration. Thus, it might find broad applications in optical metrology and biomedical science.