Publication detail

Thermal conductivity for different barrier compositions of terahertz quantum cascade lasers

Kainz, M.A. Schönhuber, S. Limbacher, B. Andrews, A.M. Detz, H. Strasser, G. ,Unterrainer, K.

Original Title

Thermal conductivity for different barrier compositions of terahertz quantum cascade lasers

Type

conference paper

Language

English

Original Abstract

The control of heat dissipation in semiconductor lasers is in general of importance. Especially in the case of quantum cascade lasers (QCLs) [1], this problem has to be treated with great attention. The superlattice structure of the active region strongly reduces the thermal conductivity in the direction of the growth direction [2]. Due to the low energy spacing of the upper and lower laser state in terahertz QCLs, population inversion in difficult to achieve at higher temperatures, what limits the maximum operating temperature to 200 K [3]. Additionally, the inherent emission of phonons in the active region converts a large amount of electrical input power into heat that has to be dissipated.

Keywords

Quantum cascade lasers

Authors

Kainz, M.A.; Schönhuber, S.; Limbacher, B.; Andrews, A.M.; Detz, H.; Strasser, G.; ,Unterrainer, K.

Released

23. 6. 2019

ISBN

978-17-2810-469-0

Book

Optics InfoBase Conference Papers

Pages from

1

Pages to

1

Pages count

1

BibTex

@inproceedings{BUT177036,
  author="Kainz, M.A. and Schönhuber, S. and Limbacher, B. and Andrews, A.M. and Detz, H. and Strasser, G. and ,Unterrainer, K.",
  title="Thermal conductivity for different barrier compositions of terahertz quantum cascade lasers
",
  booktitle="Optics InfoBase Conference Papers",
  year="2019",
  pages="1--1",
  isbn="978-17-2810-469-0"
}