Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

Jacob B. Khurgin; Yamac Dikmelik; Peter Q. Liu; Anthony J. Hoffman; Matthew D. Escarra; Kale J. Franz; Claire F. Gmachl

doi:10.1063/1.3093819

Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

Jacob B. Khurgin, Yamac Dikmelik, Peter Q. Liu, Anthony J. Hoffman, Matthew D. Escarra, Kale J. Franz, Claire F. Gmachl

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

90 Scopus citations

Abstract

A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.

Original language	English (US)
Article number	091101
Journal	Applied Physics Letters
Volume	94
Issue number	9
DOIs	https://doi.org/10.1063/1.3093819
State	Published - 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3093819

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title = "Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers",

abstract = "A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.",

author = "Khurgin, {Jacob B.} and Yamac Dikmelik and Liu, {Peter Q.} and Hoffman, {Anthony J.} and Escarra, {Matthew D.} and Franz, {Kale J.} and Gmachl, {Claire F.}",

year = "2009",

doi = "10.1063/1.3093819",

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volume = "94",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

number = "9",

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T1 - Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

AU - Khurgin, Jacob B.

AU - Dikmelik, Yamac

AU - Liu, Peter Q.

AU - Hoffman, Anthony J.

AU - Escarra, Matthew D.

AU - Franz, Kale J.

AU - Gmachl, Claire F.

PY - 2009

Y1 - 2009

N2 - A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.

AB - A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.

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DO - 10.1063/1.3093819

M3 - Article

AN - SCOPUS:62149147469

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VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 091101

ER -

Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

Abstract

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