Broadband emission from InGaAs-GaAs-AlGaAs LED withintegrated absorber by selective-area MOCVD

Abstract
Three-step selective-area metal organic chemical vapour deposition is used to fabricate a strained layer InGaAs-GaAs-AlGaAs single quantum well broad spectrum LED with an integrated absorber. A tapered oxide width mask pattern is used for the active region regrowth to produce an edge emitting device with a continuous variation in the quantum well thickness and composition along its length. A maximum spectral width of 165 nm is obtained.