Quantum cascade lasers with low-loss chalcogenide lateral waveguides

Claire Gmachl; Harold Y. Hwang; Roberto Paiella; Deborah L. Sivco; James N. Baillargeon; Federico Capasso; Alfred Y. Cho

doi:10.1109/68.914314

Quantum cascade lasers with low-loss chalcogenide lateral waveguides

Claire Gmachl
, Harold Y. Hwang
, Roberto Paiella
, Deborah L. Sivco
, James N. Baillargeon
, Federico Capasso
, Alfred Y. Cho

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

24 Scopus citations

Abstract

Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings. Several-micrometer-thick Ge _0.25Se _0.75 glass has been deposited by pulsed laser ablation onto the sidewalls of narrow, deep etched laser ridges. Due to the intrinsically low mid-infrared attenuation of the chalcogenide material, the waveguide loss of the lasers is significantly reduced, by up to ∼50%, depending on the ridge width, when compared to conventional ridge waveguides. This resulted in an improved overall laser performance, such as a reduction of the threshold current density, an increase in slope efficiency, and an improved temperature performance.

Original language	English (US)
Pages (from-to)	182-184
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	13
Issue number	3
DOIs	https://doi.org/10.1109/68.914314
State	Published - Mar 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Keywords

Chalcogenide glass
Mid-infrared
Pulsed laser ablation
Unipolar semiconductor laser
Waveguides

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10.1109/68.914314

Cite this

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title = "Quantum cascade lasers with low-loss chalcogenide lateral waveguides",

abstract = "Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings. Several-micrometer-thick Ge 0.25Se 0.75 glass has been deposited by pulsed laser ablation onto the sidewalls of narrow, deep etched laser ridges. Due to the intrinsically low mid-infrared attenuation of the chalcogenide material, the waveguide loss of the lasers is significantly reduced, by up to ∼50\%, depending on the ridge width, when compared to conventional ridge waveguides. This resulted in an improved overall laser performance, such as a reduction of the threshold current density, an increase in slope efficiency, and an improved temperature performance.",

keywords = "Chalcogenide glass, Mid-infrared, Pulsed laser ablation, Unipolar semiconductor laser, Waveguides",

author = "Claire Gmachl and Hwang, \{Harold Y.\} and Roberto Paiella and Sivco, \{Deborah L.\} and Baillargeon, \{James N.\} and Federico Capasso and Cho, \{Alfred Y.\}",

note = "Funding Information: Manuscript received September 7, 2000; revised December 1, 2000. This work was supported by DARPA/US Army Research Office under Contract DAAG55-98-C-0050.",

year = "2001",

month = mar,

doi = "10.1109/68.914314",

language = "English (US)",

volume = "13",

pages = "182--184",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Quantum cascade lasers with low-loss chalcogenide lateral waveguides

AU - Gmachl, Claire

AU - Hwang, Harold Y.

AU - Paiella, Roberto

AU - Sivco, Deborah L.

AU - Baillargeon, James N.

AU - Capasso, Federico

AU - Cho, Alfred Y.

N1 - Funding Information: Manuscript received September 7, 2000; revised December 1, 2000. This work was supported by DARPA/US Army Research Office under Contract DAAG55-98-C-0050.

PY - 2001/3

Y1 - 2001/3

N2 - Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings. Several-micrometer-thick Ge 0.25Se 0.75 glass has been deposited by pulsed laser ablation onto the sidewalls of narrow, deep etched laser ridges. Due to the intrinsically low mid-infrared attenuation of the chalcogenide material, the waveguide loss of the lasers is significantly reduced, by up to ∼50%, depending on the ridge width, when compared to conventional ridge waveguides. This resulted in an improved overall laser performance, such as a reduction of the threshold current density, an increase in slope efficiency, and an improved temperature performance.

AB - Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings. Several-micrometer-thick Ge 0.25Se 0.75 glass has been deposited by pulsed laser ablation onto the sidewalls of narrow, deep etched laser ridges. Due to the intrinsically low mid-infrared attenuation of the chalcogenide material, the waveguide loss of the lasers is significantly reduced, by up to ∼50%, depending on the ridge width, when compared to conventional ridge waveguides. This resulted in an improved overall laser performance, such as a reduction of the threshold current density, an increase in slope efficiency, and an improved temperature performance.

KW - Chalcogenide glass

KW - Mid-infrared

KW - Pulsed laser ablation

KW - Unipolar semiconductor laser

KW - Waveguides

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

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Quantum cascade lasers with low-loss chalcogenide lateral waveguides

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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