Thermal and stark-effect roll-over of quantum-cascade lasers

Scott S. Howard; Zhijun Liu; Claire F. Gmachl

doi:10.1109/JQE.2007.912477

Thermal and stark-effect roll-over of quantum-cascade lasers

Scott S. Howard, Zhijun Liu, Claire F. Gmachl

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	319-323
Number of pages	5
Journal	IEEE Journal of Quantum Electronics
Volume	44
Issue number	4
DOIs	https://doi.org/10.1109/JQE.2007.912477
State	Published - 2008

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Quantum-cascade (QC) laser
Rollover
Thermal modeling

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10.1109/JQE.2007.912477

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title = "Thermal and stark-effect roll-over of quantum-cascade lasers",

abstract = "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.",

keywords = "Quantum-cascade (QC) laser, Rollover, Thermal modeling",

author = "Howard, {Scott S.} and Zhijun Liu and Gmachl, {Claire F.}",

note = "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: showard@princeton.edu; zhijunl@princeton.edu; cgmachl@princeton.edu). Digital Object Identifier 10.1109/JQE.2007.912477 Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2008",

doi = "10.1109/JQE.2007.912477",

language = "English (US)",

volume = "44",

pages = "319--323",

journal = "IEEE Journal of Quantum Electronics",

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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: showard@princeton.edu; zhijunl@princeton.edu; cgmachl@princeton.edu). 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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JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

IS - 4

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Thermal and stark-effect roll-over of quantum-cascade lasers

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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