TY - GEN
T1 - Investigating the impact of molecular beam epitaxy growth properties on the temperature performance of cutting-edge terahertz quantum cascade lasers
AU - Gower, Nathalie Lander
AU - Levy, Shiran
AU - Piperno, Silvia
AU - Addamane, Sadhvikas J.
AU - Albo, Asaf
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This research compares two two-well (TW) Terahertz Quantum Cascade Lasers (THz QCLs) using non-equilibrium Green's functions (NEGF) in order to understand the discrepancy in their maximum operating temperatures (Tmax). Despite similar designs and simulation findings, the devices show a substantial performance difference. This is connected to variations in interface roughness (IFR) caused by different Molecular Beam Epitaxy (MBE) reactors. Our findings highlight the necessity of accurate MBE growth control for high-performance THz QCLs and propose approaches for interface modification to improve device temperature performance, providing a clearer path to meeting and exceeding current Tmax records.
AB - This research compares two two-well (TW) Terahertz Quantum Cascade Lasers (THz QCLs) using non-equilibrium Green's functions (NEGF) in order to understand the discrepancy in their maximum operating temperatures (Tmax). Despite similar designs and simulation findings, the devices show a substantial performance difference. This is connected to variations in interface roughness (IFR) caused by different Molecular Beam Epitaxy (MBE) reactors. Our findings highlight the necessity of accurate MBE growth control for high-performance THz QCLs and propose approaches for interface modification to improve device temperature performance, providing a clearer path to meeting and exceeding current Tmax records.
KW - interface roughness
KW - MBE growth
KW - NEGF
KW - THz QCLs
UR - http://www.scopus.com/inward/record.url?scp=85207171531&partnerID=8YFLogxK
U2 - 10.1109/IRMMW-THz60956.2024.10697882
DO - 10.1109/IRMMW-THz60956.2024.10697882
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AN - SCOPUS:85207171531
T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
BT - 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024
PB - IEEE Computer Society
T2 - 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024
Y2 - 1 September 2024 through 6 September 2024
ER -