Integration of surface emitting laser and photodiode for monitoring power output of surface emitting laser

摘要

The integrated device includes an active region (204) in between two Bragg mirror regions (202,206), and a Schottky contact (236). The active region has a light generation region (220) which generates light in response to light passing through it. The two mirrors are on opposite side of the active region and reflect light back into the active region. One mirror has an electrode (230) on its non-reflecting surface. Light from the active region is emitted in one direction through the opposite surface. A substrate (212) is also provided which has one side located on the light emitting side of the active region. The Schottky contact for detecting the emitted light is formed on a substrate surface. The Schottky barrier of the contact is less than the photon energy of the light emitted.