Strong and weak optical coupling of electrically pumped mid-infrared semiconductor disk lasers

We present concepts of strong and weak optically coupled electrically pumped disk lasers operating on collective Whispering Gallery Modes. The laser samples are based on quantum heterostructure GaInAsSb/AlGaAsSb. Emission spectra and directional patterns of the coupled disc lasers have been studied. It is shown that these lasers generate collective modes with twice as small free spectral range as a single disc laser.