Researchers from NTNU and EPFL have developed a compact, low-cost laser on a photonic chip using thin-film lithium niobate. This new laser enables ultrafast, mode-hop-free tuning and delivers stable performance with a single control knob. Demonstrated in LiDAR systems, it achieved 4 cm range precision for self-driving cars and also detected trace hydrogen cyanide for environmental monitoring. The breakthrough could transform precision applications like gas sensing and autonomous navigation, making advanced systems more affordable and accessible. The laser’s scalable chip-based design supports mass production using existing fabrication methods.
