Soibel, AlexGmachl, ClaireSivco, Deborah L.Peabody, Milton L.Sergent, A. MichaelCho, Alfred Y.Capasso, Federico2019-09-172003Soibel, Alex, Claire Gmachl, Deborah L. Sivco, Milton L. Peabody, A. Michael Sergent, Alfred Y. Cho, and Federico Capasso. 2003. “Optimization of Broadband Quantum Cascade Lasers for Continuous Wave Operation.” Applied Physics Letters 83 (1): 24–26. https://doi.org/10.1063/1.1588374.0003-69511077-31181520-8842http://nrs.harvard.edu/urn-3:HUL.InstRepos:41371371We have optimized the design of the broadband quantum cascade laser for cw operation. The improved design leads to a gain ripple of only about 4 cm(-1) over more than a 0.5-mum spectral range. Simultaneous cw emission at several wavelengths spanning the range between 6.7 and 7.4 mum has been achieved in a temperature interval from 20 to 77 K.en-USJournal Article2019-09-1710.1063/1.1588374