TY - JOUR
T1 - Thermal and stark-effect roll-over of quantum-cascade lasers
AU - Howard, Scott S.
AU - Liu, Zhijun
AU - Gmachl, Claire F.
N1 - Funding Information:
Manuscript received July 5, 2007; revised August 28, 2007. This work was supported in part by MIRTHE (NSF-ERC), DARPA L-PAS, and DARPA EMIL. The authors are with the Department of Electrical Engineering, PRISM, and MIRTHE, Princeton University, Princeton, NJ 08540 USA (e-mail: [email protected]; [email protected]; [email protected]). Digital Object Identifier 10.1109/JQE.2007.912477
Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - A computational and experimental analysis of rollover in high-performance lambda λ ∼ 8μm quantum-cascade (QC) lasers is presented. In addition to conventional, thermal rollover, which is also a common cause of power rollover in diode lasers, "Stark-effect" rollover is observed. While both effects can occur in the same QC laser design, thermal and Stark-effect rollover are shown to be the dominating factor for high-temperature continuous wave operated, and pulsed low-temperature operated and low-doped lasers, respectively. Additionally, the role of the continuum above the wells and barriers is discussed for both effects.
AB - A computational and experimental analysis of rollover in high-performance lambda λ ∼ 8μm quantum-cascade (QC) lasers is presented. In addition to conventional, thermal rollover, which is also a common cause of power rollover in diode lasers, "Stark-effect" rollover is observed. While both effects can occur in the same QC laser design, thermal and Stark-effect rollover are shown to be the dominating factor for high-temperature continuous wave operated, and pulsed low-temperature operated and low-doped lasers, respectively. Additionally, the role of the continuum above the wells and barriers is discussed for both effects.
KW - Quantum-cascade (QC) laser
KW - Rollover
KW - Thermal modeling
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U2 - 10.1109/JQE.2007.912477
DO - 10.1109/JQE.2007.912477
M3 - Article
AN - SCOPUS:50849121706
SN - 0018-9197
VL - 44
SP - 319
EP - 323
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 4
ER -