sentences:  Laser chips are incorporated in many products that today are taken for granted, such as CDs, DVDs, laser printers, and fiberoptic communications.Other devices relying on semiconductor laser chip technology include illumination, ranging, and spectroscopic sensing systems of many types, and laser welding, cutting, and machining tools such as those now widely adopted by automobile manufacturers.In addition, the same principles first developed by Garbuzov and Alferov underlie the ongoing revolution in gallium nitride-based solid-state lighting with high-quality high-efficiency phosphor-LED luminaires now available to consumers at affordable prices.