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

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 param...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2017-07, Vol.23 (4), p.1-9
Main Authors: Agnew, Gary, Indjin, Dragan, Rakic, Aleksandar D., Grier, Andrew, Taimre, Thomas, Bertling, Karl, Lim, Yah Leng, Ikonic, Zoran, Dean, Paul, Valavanis, Alexander, Harrison, Paul
Format: Article
Language:English
Subjects:
bandwidth
Computational modeling
electro-optical dynamics
free space communication
Laser modes
Mathematical model
Photonics
Predictive models
Quantum cascade laser
Quantum cascade lasers
rate equation model
thermal roll-over
turn-on behavior
Waveguide lasers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2016.2638539