A practical guide to Digital Micro-mirror Devices (DMDs) for wavefront shaping

TL;DR

This paper provides a practical guide for using Digital Micro-mirror Devices in wavefront shaping, addressing technical challenges and offering solutions for optimal performance in optical applications.

Contribution

It offers a comprehensive characterization and mitigation approach for DMDs, tailored for wavefront shaping, based on their original design limitations.

Findings

Identifies key technical drawbacks of DMDs in wavefront shaping.

Provides practical methods to mitigate device limitations.

Enhances the performance and reliability of DMD-based wavefront shaping setups.

Abstract

Digital micromirror devices have gained popularity in wavefront shaping, offering a high frame rate alternative to liquid crystal spatial light modulators. They are relatively inexpensive, offer high resolution, are easy to operate, and a single device can be used in a broad optical bandwidth. However, some technical drawbacks must be considered to achieve optimal performance. These issues, often undocumented by manufacturers, mostly stem from the device's original design for video projection applications. Herein, we present a guide to characterize and mitigate these effects. Our focus is on providing simple and practical solutions that can be easily incorporated into a typical wavefront shaping setup.