Photonic Chip Combines Many VCSELs into Single Laser
WÜRZBURG, Germany, Sept. 30, 2021 — Researchers from the Technion-Israel Institute of Technology and the University of Würzburg successfully forced an array of vertical-cavity lasers to act together as a single laser — a highly effective laser network the size of a grain of sand. Vertical-cavity surface-emitting lasers (VCSELs), widely used in applications such as cell phones, car sensors, and data transmission, measure just a few microns, which sets a strict limit on the output power they can generate.