Thermal analysis of 980 nm vertical cavity surface emitting lasers with different oxide aperture diameters

In this paper, the thermal analysis of 980 nm vertical cavity surface emitting lasers with different oxide aperture diameters is theoretically performed by using simulation software PICS3D which self-consistently combines three-dimensional simulation nbsp; of carrier transport, self-heating and optical wave-guiding. Temperature profiles and heat power density were obtained by using a three-dimensional cylindrical heat generation and dissipation model. Simulation results show that Joule heating is the main heat source in the device. The thermal resistance increases significantly with a decrease in oxide aperture size.