TY - JOUR
T1 - Temperature-Dependent High-Speed Dynamics of Terahertz Quantum Cascade Lasers
AU - Agnew, Gary
AU - Grier, Andrew
AU - Taimre, Thomas
AU - Bertling, Karl
AU - Lim, Yah Leng
AU - Ikonić, Zoran
AU - Dean, Paul
AU - Valavanis, Alexander
AU - Harrison, Paul
AU - Indjin, Dragan
AU - Rakić, Aleksandar D.
N1 - Funding Information:
This work was supported under the Australian Research Council's Discovery Projects funding scheme (DP 160 103910) and the Queensland Government's Advance Queensland programme. This work was also supported by the Engineering and Physical Sciences Research Council, U.K., under Grants EP/J017671/1 and EP/J002356/1 and DTG award, by the Royal Society under Wolfson Research Merit Awards WM110032 and WM150029, and by the European Cooperation in Science and Technology (Action BM1205).
Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - 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.
AB - 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.
KW - bandwidth
KW - electro-optical dynamics
KW - free space communication
KW - Quantum cascade laser
KW - rate equation model
KW - thermal roll-over
KW - turn-on behavior
UR - http://www.scopus.com/inward/record.url?scp=85015700908&partnerID=8YFLogxK
UR - https://doi.org/10.1109/JSTQE.2019.2954695
U2 - 10.1109/JSTQE.2016.2638539
DO - 10.1109/JSTQE.2016.2638539
M3 - Article
AN - SCOPUS:85015700908
VL - 23
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
SN - 1077-260X
IS - 4
M1 - 7792643
ER -
