Thermal modeling of terahertz quantum-cascade lasers: Comparison of optical waveguides

被引：35

作者：

Evans, Craig A. ^{[1
]}

Indjin, Dragan ^{[1
]}

Ikonic, Zoran ^{[1
]}

Harrison, Paul ^{[1
]}

Vitiello, Miriam Serena ^{[2
,3
]}

Spagnolo, Vincenzo ^{[2
,4
]}

Scamarcio, Gaetano ^{[2
,3
]}

机构：

[1] Univ Leeds, Sch Elect & Elect Engn, Inst Microwaves & Photon, Leeds LS2 9JT, W Yorkshire, England

[2] Univ Bari, CNR, INFM, Reg Lab LIT3, I-70126 Bari, Italy

[3] Univ Bari, Dipartimento Interateneo Fis M Merlin, I-70126 Bari, Italy

[4] Politecn Bari, Dipartimento Interateneo Fis M Merlin, I-70126 Bari, Italy

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2008年 / 44卷 / 7-8期

关键词：

optical waveguide; quantum-cascade laser (QCL); terahertz (THz); thermal conductivity; thermal modeling;

D O I：

10.1109/JQE.2008.922327

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We compare a set of experimental lattice temperature profiles measured in a surface-emitting terahertz (THz) quantum-cascade laser (QCL) with the results of a 2-D anisotropic heat diffusion model. We evaluate the temperature dependence of the active of the cross-plane thermal conductivity (kappa(perpendicular to)) region which is known. to be strongly anisotropic due to its superlattice-like nature. Knowledge of (kappa(perpendicular to)) and its temperature dependence is crucial in order to improve the temperature performance of THz QCLs and this has been used to investigate the longitudinal lattice temperature distribution of the active region and to compare the thermal properties of metal-metal and semi-insulating surface-plasmon THz optical waveguides using a 3-D anisotropic heat diffusion model.

引用

页码：680 / 685

页数：6

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