Extraction of the electron excess temperature in terahertz quantum cascade lasers from laser characteristics

Nathalie Lander Gower; Shiran Levy; Silvia Piperno; Sadhvikas J. Addamane; John L. Reno; Asaf Albo

doi:10.1515/nanoph-2023-0617

Extraction of the electron excess temperature in terahertz quantum cascade lasers from laser characteristics

Nathalie Lander Gower, Shiran Levy, Silvia Piperno, Sadhvikas J. Addamane, John L. Reno, Asaf Albo

United States Department of Energy

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We propose a method to extract the upper laser level's (ULL's) excess electronic temperature from the analysis of the maximum light output power (P max) and current dynamic range ΔJ d = (J max - J th) of terahertz quantum cascade lasers (THz QCLs). We validated this method, both through simulation and experiment, by applying it on THz QCLs supporting a clean three-level system. Detailed knowledge of electronic excess temperatures is of utmost importance in order to achieve high temperature performance of THz QCLs. Our method is simple and can be easily implemented, meaning an extraction of the excess electron temperature can be achieved without intensive experimental effort. This knowledge should pave the way toward improvement of the temperature performance of THz QCLs beyond the state-of-the-art.

Original language	English
Pages (from-to)	1725-1733
Number of pages	9
Journal	Nanophotonics
Volume	13
Issue number	10
DOIs	https://doi.org/10.1515/nanoph-2023-0617
State	Published - 3 Apr 2024

Bibliographical note

Publisher Copyright:
© 2023 the author(s), published by De Gruyter, Berlin/Boston.

Funding

Research funding: The authors would like to acknowledge the Israel Science Foundation (ISF 1755/23); Israel Ministry of Science and Technology; Center for Integrated Nanotechnologies; U.S. Department of Energy; Sandia National Laboratories; National Nuclear Security Administration for its grant.

Funders	Funder number
U.S. Department of Energy
National Nuclear Security Administration
Sandia National Laboratories
Center for Integrated Nanotechnologies
Israel Science Foundation	ISF 1755/23
Ministry of science and technology, Israel

Keywords

LO-phonon
electron temperature
terahertz quantum cascade lasers

Access to Document

10.1515/nanoph-2023-0617

Cite this

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abstract = "We propose a method to extract the upper laser level's (ULL's) excess electronic temperature from the analysis of the maximum light output power (P max) and current dynamic range ΔJ d = (J max - J th) of terahertz quantum cascade lasers (THz QCLs). We validated this method, both through simulation and experiment, by applying it on THz QCLs supporting a clean three-level system. Detailed knowledge of electronic excess temperatures is of utmost importance in order to achieve high temperature performance of THz QCLs. Our method is simple and can be easily implemented, meaning an extraction of the excess electron temperature can be achieved without intensive experimental effort. This knowledge should pave the way toward improvement of the temperature performance of THz QCLs beyond the state-of-the-art.",

keywords = "LO-phonon, electron temperature, terahertz quantum cascade lasers",

author = "\{Lander Gower\}, Nathalie and Shiran Levy and Silvia Piperno and Addamane, \{Sadhvikas J.\} and Reno, \{John L.\} and Asaf Albo",

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AU - Lander Gower, Nathalie

AU - Levy, Shiran

AU - Piperno, Silvia

AU - Addamane, Sadhvikas J.

AU - Reno, John L.

AU - Albo, Asaf

PY - 2024/4/3

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N2 - We propose a method to extract the upper laser level's (ULL's) excess electronic temperature from the analysis of the maximum light output power (P max) and current dynamic range ΔJ d = (J max - J th) of terahertz quantum cascade lasers (THz QCLs). We validated this method, both through simulation and experiment, by applying it on THz QCLs supporting a clean three-level system. Detailed knowledge of electronic excess temperatures is of utmost importance in order to achieve high temperature performance of THz QCLs. Our method is simple and can be easily implemented, meaning an extraction of the excess electron temperature can be achieved without intensive experimental effort. This knowledge should pave the way toward improvement of the temperature performance of THz QCLs beyond the state-of-the-art.

AB - We propose a method to extract the upper laser level's (ULL's) excess electronic temperature from the analysis of the maximum light output power (P max) and current dynamic range ΔJ d = (J max - J th) of terahertz quantum cascade lasers (THz QCLs). We validated this method, both through simulation and experiment, by applying it on THz QCLs supporting a clean three-level system. Detailed knowledge of electronic excess temperatures is of utmost importance in order to achieve high temperature performance of THz QCLs. Our method is simple and can be easily implemented, meaning an extraction of the excess electron temperature can be achieved without intensive experimental effort. This knowledge should pave the way toward improvement of the temperature performance of THz QCLs beyond the state-of-the-art.

KW - LO-phonon

KW - electron temperature

KW - terahertz quantum cascade lasers

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Extraction of the electron excess temperature in terahertz quantum cascade lasers from laser characteristics

Abstract

Bibliographical note

Funding

Keywords

Access to Document

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