High-power distributed-feedback quantum cascade lasers

W. W. Bewley; I. Vurgaftman; C. S. Kim; J. R. Meyer; J. Nguyen; A. J. Evans; J. S. Yu; S. R. Darvish; S. Slivken

doi:10.1117/12.640087

High-power distributed-feedback quantum cascade lasers

W. W. Bewley^*, I. Vurgaftman, C. S. Kim, J. R. Meyer, J. Nguyen, A. J. Evans, J. S. Yu, S. R. Darvish, S. Slivken

^*Corresponding author for this work

Electrical and Computer Engineering

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

Abstract

Whereas high-power operation (> 1 W of cw output power at 200 K) has been demonstrated for quantum cascade lasers emitting at λ = 4.7-6.2 μm, those devices generally exhibited multiple longitudinal modes. Recently, a distributed-feedback quantum cascade laser operating in a single spectral mode at λ = 4.8 μm and at temperatures up to 333 K has been reported. In the present work, we provide detailed measurements and modeling of its performance characteristics. The sidemode suppression ratio exceeds 25 dB, and the emission remains robustly single-mode at all currents and temperatures tested. Cw output powers of 99 mW at 298 K and 357 mW at 200 K are obtained at currents well below the thermal rollover point. The slope efficiency and subthreshold amplified spontaneous emission spectra are shown to be consistent with a coupling coefficient of no more than κL ≈ 4-5, which is substantially lower than the estimate of 9 based on the nominal grating fabrication parameters.

Original language	English (US)
Title of host publication	Quantum Sensing and Nanophotonic Devices III
DOIs	https://doi.org/10.1117/12.640087
State	Published - 2006
Event	Quantum Sensing and Nanophotonic Devices III - San Jose, CA, United States Duration: Jan 23 2006 → Jan 26 2006

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6127
ISSN (Print)	0277-786X

Other

Other	Quantum Sensing and Nanophotonic Devices III
Country/Territory	United States
City	San Jose, CA
Period	1/23/06 → 1/26/06

Keywords

Diode laser
Mid-infrared
Quantum cascade laser
Quantum well

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.640087

Cite this

Bewley, W. W., Vurgaftman, I., Kim, C. S., Meyer, J. R., Nguyen, J., Evans, A. J., Yu, J. S., Darvish, S. R., & Slivken, S. (2006). High-power distributed-feedback quantum cascade lasers. In Quantum Sensing and Nanophotonic Devices III Article 612704 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6127). https://doi.org/10.1117/12.640087

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title = "High-power distributed-feedback quantum cascade lasers",

abstract = "Whereas high-power operation (> 1 W of cw output power at 200 K) has been demonstrated for quantum cascade lasers emitting at λ = 4.7-6.2 μm, those devices generally exhibited multiple longitudinal modes. Recently, a distributed-feedback quantum cascade laser operating in a single spectral mode at λ = 4.8 μm and at temperatures up to 333 K has been reported. In the present work, we provide detailed measurements and modeling of its performance characteristics. The sidemode suppression ratio exceeds 25 dB, and the emission remains robustly single-mode at all currents and temperatures tested. Cw output powers of 99 mW at 298 K and 357 mW at 200 K are obtained at currents well below the thermal rollover point. The slope efficiency and subthreshold amplified spontaneous emission spectra are shown to be consistent with a coupling coefficient of no more than κL ≈ 4-5, which is substantially lower than the estimate of 9 based on the nominal grating fabrication parameters.",

keywords = "Diode laser, Mid-infrared, Quantum cascade laser, Quantum well",

author = "Bewley, {W. W.} and I. Vurgaftman and Kim, {C. S.} and Meyer, {J. R.} and J. Nguyen and Evans, {A. J.} and Yu, {J. S.} and Darvish, {S. R.} and S. Slivken",

year = "2006",

doi = "10.1117/12.640087",

language = "English (US)",

isbn = "0819461695",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Quantum Sensing and Nanophotonic Devices III",

note = "Quantum Sensing and Nanophotonic Devices III ; Conference date: 23-01-2006 Through 26-01-2006",

}

Bewley, WW, Vurgaftman, I, Kim, CS, Meyer, JR, Nguyen, J, Evans, AJ, Yu, JS, Darvish, SR & Slivken, S 2006, High-power distributed-feedback quantum cascade lasers. in Quantum Sensing and Nanophotonic Devices III., 612704, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6127, Quantum Sensing and Nanophotonic Devices III, San Jose, CA, United States, 1/23/06. https://doi.org/10.1117/12.640087

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T1 - High-power distributed-feedback quantum cascade lasers

AU - Bewley, W. W.

AU - Vurgaftman, I.

AU - Kim, C. S.

AU - Meyer, J. R.

AU - Nguyen, J.

AU - Evans, A. J.

AU - Yu, J. S.

AU - Darvish, S. R.

AU - Slivken, S.

PY - 2006

Y1 - 2006

N2 - Whereas high-power operation (> 1 W of cw output power at 200 K) has been demonstrated for quantum cascade lasers emitting at λ = 4.7-6.2 μm, those devices generally exhibited multiple longitudinal modes. Recently, a distributed-feedback quantum cascade laser operating in a single spectral mode at λ = 4.8 μm and at temperatures up to 333 K has been reported. In the present work, we provide detailed measurements and modeling of its performance characteristics. The sidemode suppression ratio exceeds 25 dB, and the emission remains robustly single-mode at all currents and temperatures tested. Cw output powers of 99 mW at 298 K and 357 mW at 200 K are obtained at currents well below the thermal rollover point. The slope efficiency and subthreshold amplified spontaneous emission spectra are shown to be consistent with a coupling coefficient of no more than κL ≈ 4-5, which is substantially lower than the estimate of 9 based on the nominal grating fabrication parameters.

AB - Whereas high-power operation (> 1 W of cw output power at 200 K) has been demonstrated for quantum cascade lasers emitting at λ = 4.7-6.2 μm, those devices generally exhibited multiple longitudinal modes. Recently, a distributed-feedback quantum cascade laser operating in a single spectral mode at λ = 4.8 μm and at temperatures up to 333 K has been reported. In the present work, we provide detailed measurements and modeling of its performance characteristics. The sidemode suppression ratio exceeds 25 dB, and the emission remains robustly single-mode at all currents and temperatures tested. Cw output powers of 99 mW at 298 K and 357 mW at 200 K are obtained at currents well below the thermal rollover point. The slope efficiency and subthreshold amplified spontaneous emission spectra are shown to be consistent with a coupling coefficient of no more than κL ≈ 4-5, which is substantially lower than the estimate of 9 based on the nominal grating fabrication parameters.

KW - Diode laser

KW - Mid-infrared

KW - Quantum cascade laser

KW - Quantum well

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Quantum Sensing and Nanophotonic Devices III

T2 - Quantum Sensing and Nanophotonic Devices III

Y2 - 23 January 2006 through 26 January 2006

ER -

High-power distributed-feedback quantum cascade lasers

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