Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser

Shiran Levy; Nathalie Lander Gower; Silvia Piperno; Asaf Albo

doi:10.1109/IRMMW-THz60956.2024.10697706

Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser

Shiran Levy, Nathalie Lander Gower, Silvia Piperno, Asaf Albo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this research we investigate the issues that arise from line broadening in m-plane GaN Terahertz Quantum Cascade Lasers (THz QCLs). Our study using non-equilibrium Green's functions (NEGF) shows that factors beyond longitudinal-optical (LO) phonon coupling contribute to line broadening. Despite these challenges, increased doping densities were found to increase gain, allowing for lasing at up to 280 K at 7.2 THz. This indicates the potential of practical GaN-based THz QCLs for high-temperature applications, suggesting avenues for achieving room temperature operation and advancing THz QCL development.

Original language	English
Title of host publication	2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024
Publisher	IEEE Computer Society
ISBN (Electronic)	9798350370324
DOIs	https://doi.org/10.1109/IRMMW-THz60956.2024.10697706
State	Published - 2024
Externally published	Yes
Event	49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 - Perth, Australia Duration: 1 Sep 2024 → 6 Sep 2024

Publication series

Name	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
ISSN (Print)	2162-2027
ISSN (Electronic)	2162-2035

Conference

Conference	49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024
Country/Territory	Australia
City	Perth
Period	1/09/24 → 6/09/24

Keywords

GaN
line broadening
LO-phonon
THz QCLs

Access to Document

10.1109/IRMMW-THz60956.2024.10697706

Cite this

Levy, S., Gower, N. L., Piperno, S., & Albo, A. (2024). Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser. In 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz60956.2024.10697706

Levy, Shiran ; Gower, Nathalie Lander ; Piperno, Silvia et al. / Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser. 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024. IEEE Computer Society, 2024. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

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abstract = "In this research we investigate the issues that arise from line broadening in m-plane GaN Terahertz Quantum Cascade Lasers (THz QCLs). Our study using non-equilibrium Green's functions (NEGF) shows that factors beyond longitudinal-optical (LO) phonon coupling contribute to line broadening. Despite these challenges, increased doping densities were found to increase gain, allowing for lasing at up to 280 K at 7.2 THz. This indicates the potential of practical GaN-based THz QCLs for high-temperature applications, suggesting avenues for achieving room temperature operation and advancing THz QCL development.",

keywords = "GaN, line broadening, LO-phonon, THz QCLs",

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Levy, S, Gower, NL, Piperno, S & Albo, A 2024, Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser. in 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, IEEE Computer Society, 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024, Perth, Australia, 1/09/24. https://doi.org/10.1109/IRMMW-THz60956.2024.10697706

Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser. / Levy, Shiran; Gower, Nathalie Lander; Piperno, Silvia et al.
2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024. IEEE Computer Society, 2024. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - In this research we investigate the issues that arise from line broadening in m-plane GaN Terahertz Quantum Cascade Lasers (THz QCLs). Our study using non-equilibrium Green's functions (NEGF) shows that factors beyond longitudinal-optical (LO) phonon coupling contribute to line broadening. Despite these challenges, increased doping densities were found to increase gain, allowing for lasing at up to 280 K at 7.2 THz. This indicates the potential of practical GaN-based THz QCLs for high-temperature applications, suggesting avenues for achieving room temperature operation and advancing THz QCL development.

AB - In this research we investigate the issues that arise from line broadening in m-plane GaN Terahertz Quantum Cascade Lasers (THz QCLs). Our study using non-equilibrium Green's functions (NEGF) shows that factors beyond longitudinal-optical (LO) phonon coupling contribute to line broadening. Despite these challenges, increased doping densities were found to increase gain, allowing for lasing at up to 280 K at 7.2 THz. This indicates the potential of practical GaN-based THz QCLs for high-temperature applications, suggesting avenues for achieving room temperature operation and advancing THz QCL development.

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Levy S, Gower NL, Piperno S, Albo A. Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser. In 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024. IEEE Computer Society. 2024. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). doi: 10.1109/IRMMW-THz60956.2024.10697706

Overcoming Broadening Challenges and Practical Implementation of m-Plane GaN Two-Well Terahertz Quantum Cascade Laser

Abstract

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Keywords

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