In situ laser reflectometry applied to the growth of AlxG1−xAs Bragg reflectors by metalorganic chemical vapour deposition

Abstract
Laser reflectometry has been applied as an in situ growth monitoring tool for the MOCVD growth of Bragg reflectors. Reproducible accuracy of 4 nm of the stop band centre was achieved for AlAs/GaAs mirrors. AlGaAs/AlAs mirrors requiring in situ composition calibration were also successfully grown.