Design of a hybrid III-V-on-silicon microlaser with resonant cavity mirrors

A novel approach is presented to realize compact III-V-on-silicon microlasers. The concept relies on resonant mirrors in which the close interaction between a III-V waveguide and an underlying silicon cavity provides high narrow-band reflection back into the III-V waveguide. Combining two such mirrors with a III-V waveguide in between leads to a resonant mirror laser. The properties of the resonant mirror are studied for a variety of device parameters. Using this information, the properties of the resulting laser, such as threshold power and side-mode suppression ratio, are investigated. These calculations correspond well to proof-of-concept experimental results