Revolutionary Hybrid Device Enhances Laser Technology with Micro-Ring Resonator

Researchers at EPFL's Photonic Systems Laboratory have developed a hybrid device that combines semiconductor lasers with silicon nitride photonic circuits containing microresonators, resulting in a chip-scale laser source that enhances the performance of lasers and enables the generation of shorter wavelengths. This breakthrough improves the coherence of semiconductor lasers and shifts their output towards the visible spectrum, opening up new possibilities for applications in telecommunications, metrology, and other high-precision fields. The technology has the potential to revolutionize industries such as biomedical imaging and precision timekeeping, and it lays the groundwork for future advancements in laser technology.