Applied Physics Letters · 2004 · 130 citations · 9 references
EngineeringMaterials EngineeringMaterials ScienceOptical MaterialsOptoelectronicsPhotonicsLaser DiodesLaser Host MaterialsLaser OpticsLaser PhysicsPhotonic Integrated CircuitsSemiconductor LasersContinuous OperationDuty Cycle EffectsHigh-power Semiconductor LasersLayer Thickness EffectsMaterial Composition AnalysisPower OutputQuantum Cascade LasersX-ray Diffraction Analysis
Continuous-wave (cw) operation of quantum-cascade lasers emitting at λ∼4.8μm is reported up to a temperature of 323K. Accurate control of layer thickness and strain-balanced material composition is demonstrated using x-ray diffraction. cw output power is reported to be in excess of 370mW per facet at 293K, and 38mW per facet at 323K. Room-temperature average power measurements are demonstrated with over 600mW per facet at 50% duty cycle with over 300mW still observed at 100% (cw) duty cycle.
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Jérôme Faist, Federico Capasso, Deborah L. Sivco et al. · Science · 1994 · 4.5K citations
Continuous Wave Operation of a Mid-Infrared Semiconductor Laser at Room Temperature
Mattias Beck, Daniel Hofstetter, T. Aellen et al. · Science · 2002 · 779 citations