TY - GEN
T1 - Influence of Doping Density on Two-Well Injector Terahertz Quantum Cascade Lasers
AU - Gower, Nathalie Lander
AU - Salih, Mohammed
AU - Levy, Shiran
AU - Kumar, Sumona
AU - Piperno, Silvia
AU - Addamane, Sadhvikas J.
AU - Davies, A. Giles
AU - Linfield, Edmund H.
AU - Albo, Asaf
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This study explores the impact of doping density on the temperature performance of two-well injector direct-phonon (TWI-DP) terahertz quantum cascade lasers (THz QCLs) through both experimental analysis and Non-Equilibrium Green's functions (NEGF) simulations. While previous research suggested that increasing doping density could enhance performance, the findings indicate that higher doping densities do not improve temperature performance due to increased electron-electron (e-e) scattering, which outweighs the benefits of reduced ionized impurity scattering (IIS). The research emphasizes the need for precise doping optimization and suggests future design improvements, such as optimizing injection coupling and modifying barrier composition, to achieve a better high-temperature THz lasing performance.
AB - This study explores the impact of doping density on the temperature performance of two-well injector direct-phonon (TWI-DP) terahertz quantum cascade lasers (THz QCLs) through both experimental analysis and Non-Equilibrium Green's functions (NEGF) simulations. While previous research suggested that increasing doping density could enhance performance, the findings indicate that higher doping densities do not improve temperature performance due to increased electron-electron (e-e) scattering, which outweighs the benefits of reduced ionized impurity scattering (IIS). The research emphasizes the need for precise doping optimization and suggests future design improvements, such as optimizing injection coupling and modifying barrier composition, to achieve a better high-temperature THz lasing performance.
UR - https://www.scopus.com/pages/publications/105032745291
U2 - 10.1109/IRMMW-THz61557.2025.11320097
DO - 10.1109/IRMMW-THz61557.2025.11320097
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AN - SCOPUS:105032745291
T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
BT - 50th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2025
PB - IEEE Computer Society
T2 - 50th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2025
Y2 - 17 August 2025 through 22 August 2025
ER -