J Faist 1994 + Köhler 2002 THz-QCL quantum-cascade-laser; modern modern foundational text + 2024 RT-QCL room-temperature 4 mW operation.
J Faist 1994 + Köhler 2002 THz-QCL quantum-cascade-laser; modern modern foundational text + 2024 RT-QCL room-temperature 4 mW operation.