sentences:  At the same time, he made a significant impact in high power diode lasers and their heterostructures by introducing the "broadened waveguide," a concept which now serves as a basis for the entire industry producing high power lasers for industrial applications (U.S. Patent 5,818,860).In 2000, Garbuzov became one of the founders of Princeton Lightwave Inc., where he was Vice President of Research, where he continued his work on high-power stripe lasers.Garbuzov's work led to the acquisition of a portion of PLI by the TRUMPF Group, a manufacturer of industrial laser metal-forming and manufacturing equipment.