MBE growth of high-quality GaAs heterostructures for optoelectronic devices

The purity of GaAs grown by MBE was improved significantly when the MBE system was modified. The AlGaAs/GaAs quantum well heterostructures for mid-infrared detectors and two color infrared detector and InGaAs/GaAs quantum well heterostructure for vertical cavity surface emitting laser were grown successfully.