Terahertz generation in mid-infrared quantum cascade lasers with a dual-upper-state active region

We report the performance of room temperature terahertz sources based on intracavity difference-frequency generation in mid-infrared quantum cascade lasers with a dual-upper-state (DAU) active region. DAU active region design is theoretically expected to produce larger optical nonlinearity for terah...

Ausführliche Beschreibung