Strong and coherent ultraviolet light emission devices have enormous medical and industrial application potential, but generating ultraviolet light emission in an effective way has been challenging. Recently, a collaborative research team co-led by researchers from City University of Hong Kong (CityU) developed a new approach to generate deep-ultraviolet lasing through a "domino upconversion" processing of nanoparticles using near-infrared light, which is commonly used in telecommunication devices. The findings provide a solution for constructing miniaturized high energy lasers for bio-detection and photonic devices.
