The role of temperature in quantum-cascade laser waveguides

Craig A. Evans; Dragan Indjin; Zoran Ikonić; Paul Harrison

doi:10.1007/s10825-012-0398-7

The role of temperature in quantum-cascade laser waveguides

Craig A. Evans, Dragan Indjin, Zoran Ikonić, Paul Harrison

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

10 Citations (Scopus)

Abstract

The role of temperature on the properties of quantum-cascade laser (QCL) waveguides is investigated. One-dimensional waveguide parameters are obtained using a transfer-matrix technique and the complex dielectric constants of the waveguide layers are calculated using a semi-classical Drude-Lorentz model. To model the effect of temperature on the waveguide parameters, a temperature dependent electron mobility is incorporated within the Drude- Lorentz framework. It is shown that by including the effect of temperature, a significant improvement in the agreement with experiment of the waveguide loss and hence the laser threshold current density can be achieved.

Original language	English
Pages (from-to)	137-143
Number of pages	7
Journal	Journal of Computational Electronics
Volume	11
Issue number	1
Early online date	7 Mar 2012
DOIs	https://doi.org/10.1007/s10825-012-0398-7
Publication status	Published - 7 Mar 2012
Externally published	Yes

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title = "The role of temperature in quantum-cascade laser waveguides",

abstract = "The role of temperature on the properties of quantum-cascade laser (QCL) waveguides is investigated. One-dimensional waveguide parameters are obtained using a transfer-matrix technique and the complex dielectric constants of the waveguide layers are calculated using a semi-classical Drude-Lorentz model. To model the effect of temperature on the waveguide parameters, a temperature dependent electron mobility is incorporated within the Drude- Lorentz framework. It is shown that by including the effect of temperature, a significant improvement in the agreement with experiment of the waveguide loss and hence the laser threshold current density can be achieved.",

keywords = "Optical waveguides, Quantum-cascade lasers, Semiconductor waveguides",

author = "Evans, {Craig A.} and Dragan Indjin and Zoran Ikoni{\'c} and Paul Harrison",

note = "Funding Information: Acknowledgements We thank V.D. Jovanovi{\'c} for useful discussions and E.H. Linfield for providing the experimental GaAs electron mobility data. Authors acknowledge support of NATO Science for Peace and Security project EAP.SFPP 984068.",

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AU - Evans, Craig A.

AU - Indjin, Dragan

AU - Ikonić, Zoran

AU - Harrison, Paul

N1 - Funding Information: Acknowledgements We thank V.D. Jovanović for useful discussions and E.H. Linfield for providing the experimental GaAs electron mobility data. Authors acknowledge support of NATO Science for Peace and Security project EAP.SFPP 984068.

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N2 - The role of temperature on the properties of quantum-cascade laser (QCL) waveguides is investigated. One-dimensional waveguide parameters are obtained using a transfer-matrix technique and the complex dielectric constants of the waveguide layers are calculated using a semi-classical Drude-Lorentz model. To model the effect of temperature on the waveguide parameters, a temperature dependent electron mobility is incorporated within the Drude- Lorentz framework. It is shown that by including the effect of temperature, a significant improvement in the agreement with experiment of the waveguide loss and hence the laser threshold current density can be achieved.

AB - The role of temperature on the properties of quantum-cascade laser (QCL) waveguides is investigated. One-dimensional waveguide parameters are obtained using a transfer-matrix technique and the complex dielectric constants of the waveguide layers are calculated using a semi-classical Drude-Lorentz model. To model the effect of temperature on the waveguide parameters, a temperature dependent electron mobility is incorporated within the Drude- Lorentz framework. It is shown that by including the effect of temperature, a significant improvement in the agreement with experiment of the waveguide loss and hence the laser threshold current density can be achieved.

KW - Optical waveguides

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The role of temperature in quantum-cascade laser waveguides

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