Excited-State-Mediated Capture of Carriers Into the Ground State and the Saturation of Optical Power in Quantum-Dot Lasers

Abstract

Excited-state-mediated capture of carriers from the waveguide into the lasing ground-state in quantum dots (QDs) is studied. Such a two-step capture places a fundamental limitation on ground-state lasing-the output power saturates at high injection currents. The saturation power is controlled by the transition time between the excited- and ground-state in a… (More)

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