Stimulated Emission from an InGaAs/GaAs/AlGaAs Heterostructure Grown on a Si Substrate

摘要

High-perfection artificial Ge/Si substrates are created by hot-wire chemical-vapor deposition, and InGaAs/GaAs/AlGaAs quantum-well heterostructures are grown on these substrates by metalorganic chemical-vapor deposition. Photoluminescence spectra of these heterostructures are investigated. Stimulated emission in the near-infrared spectral range under optical pumping is observed. Threshold pump powers for the onset of stimulated emission are determined and the variation of the emission spectra with the optical-pump power is examined.