美国马里兰州约翰斯霍普金斯大学的研究者发明了一项生产氮基材料的技术,这是形成一种新型半导体激光器的关键。这类新激光器不同于现有的半导体激光器,可在光谱的可见光范围操作。这种激光器可替代彩色阴极射线管用于平面电视机的制备。半导体激光器比普通激光器小得多;可安装到指甲上。一般使用的半导体激光器是砷的化合物,如砷化镓,砷化铝,砷化铟。 Researchers at Johns Hopkins University in Maryland, Maryland, have invented a technology for producing nitrogen-based materials that is key to the formation of a new type of semiconductor laser. Unlike the existing semiconductor lasers, these new lasers operate in the visible range of the spectrum. This laser can replace the color cathode ray tube for the preparation of flat-panel TVs. Semiconductor lasers are much smaller than regular lasers; they can be mounted on nails. Commonly used semiconductor lasers are arsenic compounds such as gallium arsenide, aluminum arsenide and indium arsenide.