THz quantum cascade lasers toward high output power near liquid nitrogen temperature operation with Dewar condenser

For utilization of the real THz applications by semiconductor base QCLs, the performances balance of their output power and operation temperature are required for the recent devices. Here we demonstrate our fabricated THz QCLs toward high output power with liquid nitrogen Dewar condenser to approach the target of mW order average output power relative compact size portable THz source unit.