Temperature-Dependent High-Speed Dynamics of Terahertz Quantum Cascade Lasers

Gary Agnew, Andrew Grier, Thomas Taimre, Karl Bertling, Yah Leng Lim, Zoran Ikonić, Paul Dean, Alexander Valavanis, Paul Harrison, Dragan Indjin, Aleksandar D. Rakić

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Terahertz frequency quantum cascade lasers offer a potentially vast number of new applications. To better understand and apply these lasers, a device-specific modeling method was developed that realistically predicts optical output power under changing current drive and chip temperature. Model parameters are deduced from the self-consistent solution of a full set of rate equations, obtained from energy-balance Schrödinger-Poisson scattering transport calculations. The model is, thus, derived from first principles, based on the device structure, and is, therefore, not a generic or phenomenological model that merely imitates the expected device behavior. By fitting polynomials to data arrays representing the rate equation parameters, we are able to significantly condense the model, improving memory usage and computational efficiency.

Original languageEnglish
Article number7792643
Number of pages9
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number4
Early online date9 Mar 2017
Publication statusPublished - 1 Jul 2017
Externally publishedYes


Dive into the research topics of 'Temperature-Dependent High-Speed Dynamics of Terahertz Quantum Cascade Lasers'. Together they form a unique fingerprint.

Cite this