Self-consistent theory of the gain linewidth for quantum-cascade lasers

F Banit; SC Lee; A Knorr; Andreas Wacker

doi:10.1063/1.1851004

Self-consistent theory of the gain linewidth for quantum-cascade lasers

F Banit, SC Lee, A Knorr, Andreas Wacker

Mathematical Physics

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

Abstract

The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, Terahertz quantum-cascade laser.

Original language	English
Pages (from-to)	41108-1-41108-3
Journal	Applied Physics Letters
Volume	86
Issue number	4
DOIs	https://doi.org/10.1063/1.1851004
Publication status	Published - 2005

Subject classification (UKÄ)

Condensed Matter Physics

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10.1063/1.1851004

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title = "Self-consistent theory of the gain linewidth for quantum-cascade lasers",

abstract = "The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, Terahertz quantum-cascade laser.",

author = "F Banit and SC Lee and A Knorr and Andreas Wacker",

year = "2005",

doi = "10.1063/1.1851004",

language = "English",

volume = "86",

pages = "41108--1--41108--3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics (AIP)",

number = "4",

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TY - JOUR

T1 - Self-consistent theory of the gain linewidth for quantum-cascade lasers

AU - Banit, F

AU - Lee, SC

AU - Knorr, A

AU - Wacker, Andreas

PY - 2005

Y1 - 2005

N2 - The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, Terahertz quantum-cascade laser.

AB - The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, Terahertz quantum-cascade laser.

U2 - 10.1063/1.1851004

DO - 10.1063/1.1851004

M3 - Article

SN - 0003-6951

VL - 86

SP - 41108-1-41108-3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

ER -

Self-consistent theory of the gain linewidth for quantum-cascade lasers

Abstract

Subject classification (UKÄ)

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