Troccoli, MarianoBour, DavidCorzine, ScottHöfler, GloriaTandon, AshishMars, DanSmith, David J.Diehl, LaurentCapasso, Federico2019-09-172004Troccoli, Mariano, David Bour, Scott Corzine, Gloria Höfler, Ashish Tandon, Dan Mars, David J. Smith, Laurent Diehl, and Federico Capasso. 2004. “Low-Threshold Continuous-Wave Operation of Quantum-Cascade Lasers Grown by Metalorganic Vapor Phase Epitaxy.” Applied Physics Letters 85 (24): 5842–44. https://doi.org/10.1063/1.1834715.0003-69511077-31181520-8842http://nrs.harvard.edu/urn-3:HUL.InstRepos:41371374We report on the realization of InGaAs/InAlAs quantum-cascade lasers grown by metalorganic vapor phase epitaxy operating in continuous wave with low-threshold current densities at temperatures as high as 188 K. Threshold current densities of 950 A/cm(2) and output powers of 125 mW are measured at 80 K, while 3 mW of continuous output power are measured at 180 K, with a threshold of 2.5 kA/cm(2). In pulsed mode, peak output powers of more than 0.4 W were obtained at 80 K and of 160 mW at 300 K with thresholds of 700 A/cm(2) and 2.75 kA/cm(2), respectively.en-USJournal Article2019-09-1710.1063/1.1834715