@inproceedings{8a1d8f9ea0804479a0c2b24332bee3c5,
title = "Optimization of InP-based waveguides for high-performance mid-infrared quantum cascade lasers",
abstract = "Using a combination of semiconductor overgrowth, epi-side down mounting, and high-reflectance coating of the back facet, continuous-wave operation up to 320 K of a quantum cascade laser emitting at 8 μm was achieved. In pulsed mode at 300 K the devices exhibit threshold current densities of 1.8 kA/cm 2, peak output powers of 260 mW, and maximum slope efficiencies of 346 mW/A. In cw mode at 300 K the threshold current density was measured to be 2.5-kA/cm2, the slope efficiency was 52 mW/A, and the output power was 20 mW.",
keywords = "Molecular beam epitaxy, Quantum cascade lasers",
author = "Oana Malis and Sivco, {Deborah L.} and Jianxin Chen and Liming Zhang and Sergent, {A. Michael} and Zhijun Liu and Gmachl, {Claire F.}",
year = "2007",
doi = "10.1063/1.2730454",
language = "English (US)",
isbn = "9780735403970",
series = "AIP Conference Proceedings",
pages = "1453--1454",
booktitle = "Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B",
note = "28th International Conference on the Physics of Semiconductors, ICPS 2006 ; Conference date: 24-07-2006 Through 28-07-2006",
}