Time-resolved studies of gain dynamics in quantum cascade laser

Hyunyong Choi; Zong Kwei Wu; Theodore B. Norris; Tobias Gresch; Marcella Giovannini; Jérôme Faist; Laurent Diehl; Federico Capasso

doi:10.1063/1.2730446

Time-resolved studies of gain dynamics in quantum cascade laser

Hyunyong Choi, Zong Kwei Wu, Theodore B. Norris, Tobias Gresch, Marcella Giovannini, Jérôme Faist, Laurent Diehl, Federico Capasso

Department of Electrical and Electronic Engineering

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

Abstract

Time-resolved mid-infrared pump-probe measurements in an operating quantum cascade laser below and above threshold reveal gain recovery dynamics to be driven by transport through the quantum cascade structure with two components: relaxation within a stage on a sub-picosecond scale and transport between stages on a picosecond scale. The fast recovery corresponds to resonant tunneling from the injector ground state into the upper lasing state, and is found to be incoherent due to strong dephasing via intraband electron-electron scattering. The slower component corresponds to miniband superlattice transport. Both components have been studied as a function of bias and temperature.

Original language	English
Title of host publication	Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages	1437-1438
Number of pages	2
DOIs	https://doi.org/10.1063/1.2730446
Publication status	Published - 2007
Event	28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria Duration: 2006 Jul 24 → 2006 Jul 28

Publication series

Name	AIP Conference Proceedings
Volume	893
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	28th International Conference on the Physics of Semiconductors, ICPS 2006
Country/Territory	Austria
City	Vienna
Period	06/7/24 → 06/7/28

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.2730446

Cite this

Choi, H., Wu, Z. K., Norris, T. B., Gresch, T., Giovannini, M., Faist, J., Diehl, L., & Capasso, F. (2007). Time-resolved studies of gain dynamics in quantum cascade laser. In Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B (pp. 1437-1438). (AIP Conference Proceedings; Vol. 893). https://doi.org/10.1063/1.2730446

@inproceedings{995baf4c026c4ca2b280f4a8366a043d,

title = "Time-resolved studies of gain dynamics in quantum cascade laser",

abstract = "Time-resolved mid-infrared pump-probe measurements in an operating quantum cascade laser below and above threshold reveal gain recovery dynamics to be driven by transport through the quantum cascade structure with two components: relaxation within a stage on a sub-picosecond scale and transport between stages on a picosecond scale. The fast recovery corresponds to resonant tunneling from the injector ground state into the upper lasing state, and is found to be incoherent due to strong dephasing via intraband electron-electron scattering. The slower component corresponds to miniband superlattice transport. Both components have been studied as a function of bias and temperature.",

author = "Hyunyong Choi and Wu, {Zong Kwei} and Norris, {Theodore B.} and Tobias Gresch and Marcella Giovannini and J{\'e}r{\^o}me Faist and Laurent Diehl and Federico Capasso",

year = "2007",

doi = "10.1063/1.2730446",

language = "English",

isbn = "9780735403970",

series = "AIP Conference Proceedings",

pages = "1437--1438",

booktitle = "Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B",

note = "28th International Conference on the Physics of Semiconductors, ICPS 2006 ; Conference date: 24-07-2006 Through 28-07-2006",

}

Choi, H, Wu, ZK, Norris, TB, Gresch, T, Giovannini, M, Faist, J, Diehl, L & Capasso, F 2007, Time-resolved studies of gain dynamics in quantum cascade laser. in Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B. AIP Conference Proceedings, vol. 893, pp. 1437-1438, 28th International Conference on the Physics of Semiconductors, ICPS 2006, Vienna, Austria, 06/7/24. https://doi.org/10.1063/1.2730446

Time-resolved studies of gain dynamics in quantum cascade laser. / Choi, Hyunyong; Wu, Zong Kwei; Norris, Theodore B. et al.

Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B. 2007. p. 1437-1438 (AIP Conference Proceedings; Vol. 893).

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

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T1 - Time-resolved studies of gain dynamics in quantum cascade laser

AU - Choi, Hyunyong

AU - Wu, Zong Kwei

AU - Norris, Theodore B.

AU - Gresch, Tobias

AU - Giovannini, Marcella

AU - Faist, Jérôme

AU - Diehl, Laurent

AU - Capasso, Federico

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N2 - Time-resolved mid-infrared pump-probe measurements in an operating quantum cascade laser below and above threshold reveal gain recovery dynamics to be driven by transport through the quantum cascade structure with two components: relaxation within a stage on a sub-picosecond scale and transport between stages on a picosecond scale. The fast recovery corresponds to resonant tunneling from the injector ground state into the upper lasing state, and is found to be incoherent due to strong dephasing via intraband electron-electron scattering. The slower component corresponds to miniband superlattice transport. Both components have been studied as a function of bias and temperature.

AB - Time-resolved mid-infrared pump-probe measurements in an operating quantum cascade laser below and above threshold reveal gain recovery dynamics to be driven by transport through the quantum cascade structure with two components: relaxation within a stage on a sub-picosecond scale and transport between stages on a picosecond scale. The fast recovery corresponds to resonant tunneling from the injector ground state into the upper lasing state, and is found to be incoherent due to strong dephasing via intraband electron-electron scattering. The slower component corresponds to miniband superlattice transport. Both components have been studied as a function of bias and temperature.

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BT - Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B

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ER -

Time-resolved studies of gain dynamics in quantum cascade laser

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