Recent advances in spatial light modulator-based three-dimensional optical imaging (Invited)

TL;DR

This paper reviews recent developments in spatial light modulator-based 3D optical imaging, highlighting techniques like holography and aperture coding that enhance imaging capabilities such as resolution, depth control, and scatterer imaging.

Contribution

It provides a comprehensive survey of SLM-based imaging systems, covering historical and recent advancements in holography and coded-aperture methods for 3D imaging.

Findings

Overview of nearly 20 years of SLM-based holography systems

Discussion of advancements in coded-aperture holography

Analysis of interferenceless holography techniques

Abstract

Phase-only spatial light modulators (SLMs) are used in optical systems for several purposes. In this article, the main landmarks of SLM-based imaging systems are surveyed. In addition to conventional two-dimensional imaging, these systems are useful for multidimensional imaging, axial sectioning, field-of-view expansion, improved image resolution, imaging through scatterers, and depth-of-field control. The SLMs in this review are positioned in the system aperture and modulate the input light in various ways to achieve different imaging goals. This review begins with the nearly 20-year-old Fresnel incoherent correlation holography system, continues with coded-aperture holography, and progresses to the most recent versions of interferenceless coded-aperture holography systems.