High-power laser diodes with multiplied efficiency based on single transverse mode multi-junction heterostructures

A heterostructure design aimed at a multiple increase of the l060nm laser output efficiency is proposed. To multiply the internal and external quantum efficiency, tunnel p-n junctions (T J) were placed in the waveguide. Designed and MOCVD-grown heterostructures including two TJs demonstrate. Fabricated laser diodes demonstrate a stable second-order mode operation and a slope efficiency of 2.4W / A.