High-power mid-IR type II quantum-well lasers grown on compliant universal substrate
High-power mid-infra-red type II quantum-well lasers directly grown on compliant universal substrate with a lasing wavelength of 3.9 µm at 80 K have been realised. A peak output power of > 320 mW per facet and differential quantum efficiency (DQE) of 7.2% are observed.