Evidence of cascaded emission in a dual-wavelength quantum cascade laser

Kale J. Franz; Daniel Wasserman; Anthony J. Hoffman; David C. Jangraw; Kuen Ting Shiu; Stephen R. Forrest; Claire F. Gmachl

doi:10.1063/1.2709970

Evidence of cascaded emission in a dual-wavelength quantum cascade laser

Kale J. Franz, Daniel Wasserman, Anthony J. Hoffman, David C. Jangraw, Kuen Ting Shiu, Stephen R. Forrest, Claire F. Gmachl

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12 Scopus citations

Abstract

This letter reports on a quantum cascade laser that exhibits simultaneous dual-wavelength emission from two consecutive optical transitions in each active region. These "cascaded" transitions-a second-excited state to first-excited state and a first-excited state to ground state-yield light at ∼9.5 and ∼8.2 μm, respectively, in good agreement with simulations. The two lasing wavelengths have similar thresholds at the leading edge of a current pulse.

Original language	English (US)
Article number	091104
Journal	Applied Physics Letters
Volume	90
Issue number	9
DOIs	https://doi.org/10.1063/1.2709970
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2709970

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title = "Evidence of cascaded emission in a dual-wavelength quantum cascade laser",

abstract = "This letter reports on a quantum cascade laser that exhibits simultaneous dual-wavelength emission from two consecutive optical transitions in each active region. These {"}cascaded{"} transitions-a second-excited state to first-excited state and a first-excited state to ground state-yield light at ∼9.5 and ∼8.2 μm, respectively, in good agreement with simulations. The two lasing wavelengths have similar thresholds at the leading edge of a current pulse.",

author = "Franz, {Kale J.} and Daniel Wasserman and Hoffman, {Anthony J.} and Jangraw, {David C.} and Shiu, {Kuen Ting} and Forrest, {Stephen R.} and Gmachl, {Claire F.}",

note = "Funding Information: This work was supported in part by DARPA-LPAS and MIRTHE (NSF-ERC). One of the authors (K.J.F.) gratefully acknowledges the support of the National Science Foundation Graduate Research Fellowship Program. ",

year = "2007",

doi = "10.1063/1.2709970",

language = "English (US)",

volume = "90",

journal = "Applied Physics Letters",

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T1 - Evidence of cascaded emission in a dual-wavelength quantum cascade laser

AU - Franz, Kale J.

AU - Wasserman, Daniel

AU - Hoffman, Anthony J.

AU - Jangraw, David C.

AU - Shiu, Kuen Ting

AU - Forrest, Stephen R.

AU - Gmachl, Claire F.

N1 - Funding Information: This work was supported in part by DARPA-LPAS and MIRTHE (NSF-ERC). One of the authors (K.J.F.) gratefully acknowledges the support of the National Science Foundation Graduate Research Fellowship Program.

PY - 2007

Y1 - 2007

N2 - This letter reports on a quantum cascade laser that exhibits simultaneous dual-wavelength emission from two consecutive optical transitions in each active region. These "cascaded" transitions-a second-excited state to first-excited state and a first-excited state to ground state-yield light at ∼9.5 and ∼8.2 μm, respectively, in good agreement with simulations. The two lasing wavelengths have similar thresholds at the leading edge of a current pulse.

AB - This letter reports on a quantum cascade laser that exhibits simultaneous dual-wavelength emission from two consecutive optical transitions in each active region. These "cascaded" transitions-a second-excited state to first-excited state and a first-excited state to ground state-yield light at ∼9.5 and ∼8.2 μm, respectively, in good agreement with simulations. The two lasing wavelengths have similar thresholds at the leading edge of a current pulse.

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DO - 10.1063/1.2709970

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

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ER -

Evidence of cascaded emission in a dual-wavelength quantum cascade laser

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