Enhanced operating temperature in terahertz quantum cascade lasers based on direct phonon depopulation
Ali Khalatpour, Man Chun Tam, Sadhvikas Addamane, John L. Reno, Zbignew Wasilewski, Qing Hu
Abstract
Room temperature operation of terahertz quantum cascade lasers (THz QCLs) has been a long-pursued goal to realize compact semiconductor THz sources. In this paper, we report on improving the maximum operating temperature of THz QCLs to ∼ 261 K as a step toward the realization of this goal.
Topics & Concepts
Terahertz radiationCascadeOptoelectronicsRealization (probability)LaserPhononQuantum cascade laserPhotomixingSemiconductor laser theoryMaterials scienceQuantum wellOperating temperatureQuantumSemiconductorFar-infrared laserPhysicsOpticsTerahertz metamaterialsCondensed matter physicsChemistryQuantum mechanicsChromatographyMathematicsStatisticsThermodynamicsSpectroscopy and Laser ApplicationsAtmospheric Ozone and ClimateTerahertz technology and applications