A Route to Ultra‐Fast Amplitude‐Only Spatial Light Modulation using Phase‐Change Materials (Advanced Optical Materials 18/2023)

Controlling both the amplitude and phase of optical wavefronts has many important applications-beam steering, image processing, optical computing, and more. Conventional approaches to wavefront control include liquid crystal spatial light modulators and digital micromirrors. A missing tool is a device capable of ultra-fast amplitude-only modulation. In article number 2300765, Joe Shields, C. David Wright, and co-workers develop just such a device using phase-change materials.