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GaInAsP/InP Lateral Current Injection Laser With Uniformly Distributed Quantum-Well Structure

To enhance the internal quantum efficiency of GaInAsP/InP lateral current injection (LCI) lasers, we adopted a structure consisting of five uniformly distributed quantum-wells (QWs). A differential quantum efficiency of 59% and an internal quantum efficiency of 70% were obtained for a cavity length of 750 μm, the latter value is almost twice that of an LCI-Fabry-Pérot laser with a conventional QW structure.