Non-interferometric stand-alone single-shot holographic camera using reciprocal diffractive imaging

Abstract

An ideal holographic camera measures the amplitude and phase of the light field so that the focus can be numerically adjusted after the acquisition, and depth information about an imaged object can be deduced. The performance of holographic cameras based on reference-assisted holography is significantly limited owing to their vulnerability to vibration and complex optical configurations. Non-interferometric holographic cameras can resolve these issues. However, existing methods require constraints on an object or measurement of multiple-intensity images. In this paper, we present a holographic image sensor that reconstructs the complex amplitude of scattered light from a single-intensity image using reciprocal diffractive imaging. We experimentally demonstrate holographic imaging of three-dimensional diffusive objects and suggest its potential applications by imaging a variety of samples under both static and dynamic conditions. An ideal holographic camera acquires depth information about an object by measuring the light field. Here, the authors present a reference-free single-shot holographic image sensor that freely focuses the image of real-world objects via reciprocal diffractive imaging.