Digital Micromirror Devices for rapid fabrication of large-area laser-ablated multicolour-grating patterns

Digital Micromirror Devices (DMDs), which contain arrays of individually-controllable ~10µm square mirrors, have shown recent promise in applications for high-resolution additive [1] and subtractive [2] laser machining. Although generally used for commercial projectors, there is great interest in using DMDs for the projection of highly-demagnified spatially-patterned laser-light, where sub-wavelength-sized features can be machined using a single laser pulse