GeSn Laser II

The project is a follow-up of a previous DFG project that led to the demonstration of optically pumped laser based on (Si)GeSn/GeSn heterostructures. This was the first step towards the realization of an integrated light source operating in the NIR/MIR range. In this GeSn Laser II project, we aim at realizing an electrically pumped laser, possibly operating above Peltier temperatures. The proposed devices are based on µm-sized disks and rings lithographically defined in Si)GeSn/GeSn heterostructures with the emitted laser light decoupled laterally fby a notch.