Physicists at Harvard have developed a powerful new laser-on-a-chip that emits bright pulses in the mid-infrared spectrum – an elusive and highly useful light range for detecting gases and enabling new spectroscopic tools.

The device, which packs capabilities of much larger systems into a tiny chip, doesn’t need any external components. It merges breakthrough photonic design with quantum cascade laser tech and could soon revolutionize environmental monitoring and medical diagnostics by detecting thousands of light frequencies in one go.

Breakthrough in compact mid-infrared laser technology.