Single-pixel digital "ghost" holography

TL;DR

This paper introduces a single-pixel digital ghost holography technique that captures phase and intensity information of objects with high resolution and 3D focusing, using a novel homodyne scheme.

Contribution

It presents a new single-pixel ghost holography method that enables phase imaging with nanometric depth resolution and 3D focusing capabilities.

Findings

Achieves high signal-to-noise ratio in ghost holography

Enables phase imaging with nanometric depth resolution

Provides 3D focusing ability

Abstract

Since its discovery, the "ghost" diffraction phenomenon has emerged as a non-conventional technique for optical imaging with very promising advantages. However, extracting intensity and phase information of a structured and realistic object remains a challenge. Here, we show that a "ghost" hologram can be recorded with a single-pixel configuration by adapting concepts from standard digital holography. The presented homodyne scheme enables phase imaging with nanometric depth resolution, three-dimensional focusing ability, and shows high signal-to-noise ratio.