TY - GEN
T1 - Modeling the Influence of Charge Carrier Diffusion on Harmonic Comb Formation in Quantum Cascade Lasers
AU - Seitner, Lukas
AU - Popp, Johannes
AU - Naunheimer, Felix
AU - Janowski, Georg
AU - Haider, Michael
AU - Jirauschek, Christian
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The quantum cascade laser (QCL), operating as an optical frequency comb, is highly attractive for applications in metrology and sensing. Recently, the generation of coherent optical frequency combs in QCLs with large intermodal spacing has been demonstrated. These harmonic combs promise superior quantum features and may expand the scope of photonic quantum technologies. This paper presents a numerical study of self-starting harmonic mode-locking in terahertz QCL devices in the presence of charge carrier diffusion. With our detailed multidomain simulation approach and the possibility of artificially turning off spatial hole burning, we observe a strong dependence of the laser state on the strength of the population grating.
AB - The quantum cascade laser (QCL), operating as an optical frequency comb, is highly attractive for applications in metrology and sensing. Recently, the generation of coherent optical frequency combs in QCLs with large intermodal spacing has been demonstrated. These harmonic combs promise superior quantum features and may expand the scope of photonic quantum technologies. This paper presents a numerical study of self-starting harmonic mode-locking in terahertz QCL devices in the presence of charge carrier diffusion. With our detailed multidomain simulation approach and the possibility of artificially turning off spatial hole burning, we observe a strong dependence of the laser state on the strength of the population grating.
KW - Quantum cascade lasers
KW - charge carrier diffusion
KW - frequency combs
KW - harmonic combs
KW - spatial hole burning
UR - http://www.scopus.com/inward/record.url?scp=85178509716&partnerID=8YFLogxK
U2 - 10.1109/ICEAA57318.2023.10297844
DO - 10.1109/ICEAA57318.2023.10297844
M3 - Conference contribution
AN - SCOPUS:85178509716
T3 - 2023 International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
SP - 590
EP - 592
BT - 2023 International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
Y2 - 9 October 2023 through 13 October 2023
ER -