TY - GEN
T1 - Influence of Eigenstate Basis Sets on Self-Starting Harmonic Comb Simulations in THz QCLs
AU - Popp, Johannes
AU - Seitner, Lukas
AU - Naunheimer, Felix
AU - Haider, Michael
AU - Jirauschek, Christian
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Quantum cascade lasers (QCLs) in self-starting harmonic comb operation are highly attractive for applications in optical and quantum communication. Recently, harmonic mode-locking in QCLs has been reported in several experimental studies, which demands for a robust theoretical description. Here, we provide an extensive numerical study of a terahertz QCL active gain medium capable of self-starting harmonic mode-locking. Our theoretical characterization is divided into stationary carrier transport simulations based on the ensemble Monte Carlo method and dynamical simulations of the light-matter interaction based on multi-level Maxwell-Bloch equations. We investigate the influence of the chosen eigenstates basis on the gain spectrum and present self-consistent simulation results of stable harmonic comb operation with a mode spacing of four times the free spectral range.
AB - Quantum cascade lasers (QCLs) in self-starting harmonic comb operation are highly attractive for applications in optical and quantum communication. Recently, harmonic mode-locking in QCLs has been reported in several experimental studies, which demands for a robust theoretical description. Here, we provide an extensive numerical study of a terahertz QCL active gain medium capable of self-starting harmonic mode-locking. Our theoretical characterization is divided into stationary carrier transport simulations based on the ensemble Monte Carlo method and dynamical simulations of the light-matter interaction based on multi-level Maxwell-Bloch equations. We investigate the influence of the chosen eigenstates basis on the gain spectrum and present self-consistent simulation results of stable harmonic comb operation with a mode spacing of four times the free spectral range.
KW - Maxwell-Bloch
KW - Monte Carlo
KW - harmonic combs
KW - quantum cascade laser
KW - terahertz frequency combs
UR - https://www.scopus.com/pages/publications/85175203859
U2 - 10.1109/NUSOD59562.2023.10273518
DO - 10.1109/NUSOD59562.2023.10273518
M3 - Conference contribution
AN - SCOPUS:85175203859
T3 - Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
SP - 11
EP - 12
BT - 23rd International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023
A2 - Bardella, Paolo
A2 - Tibaldi, Alberto
PB - IEEE Computer Society
T2 - 23rd International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2023
Y2 - 18 September 2023 through 21 September 2023
ER -