Deep-UV Semiconductor Laser Enables Diverse Applications

Researchers at Cornell University demonstrated an optically pumped, aluminum gallium nitride (AlGaN)-based multimode laser that emits deep-ultraviolet (DUV) light at low modal linewidths and at wavelengths under 300 nm. DUV emitters have use in pathogen detection and sterilization, water purification, gas sensing, photolithography, and quantum computing and metrology.