Dual Resonance Phonon-Photon-PhononTerahertz Quantum-Cascade Laser: Physics ofthe Electrons Transport and TemperaturePerformance Optimization

Aleksandar Demic, Zoran Ikonic, Paul Dean, Dragan Indjin
2020 Optics Express  
The state of the art terahertz-frequency quantum cascade lasers have opened a plethora of applications over the past two decades by testing several designs up to the very limit of operating temperature, optical power and lasing frequency performance. The temperature degradation mechanisms have long been under the debate for limiting the operation up to 210 K in pulsed operation in the GaAs/AlGaAs material system. In this work, we review the existing designs and exploit two main temperature
more » ... dation mechanisms by presenting a design in which they both prove beneficial to the lasing operation by dual pumping and dual extracting lasing levels. We have applied the density matrix transport model to select potential candidate structures by simulating over two million active region designs. We present several designs which offer better performance than the current record structure.
doi:10.1364/oe.410014 pmid:33379440 fatcat:hp56djmzdfcw7jrt5ztpil23ye