Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment

Heiko Ganser; Bertold Frech; Andreas Jentsch; Manfred Mürtz; Claire Gmachl; Federico Capasso; Deborah L. Sivco; James N. Baillargeon; Albert L. Hutchinson; Alfred Y. Cho; Wolfgang Urban

doi:10.1016/S0030-4018(01)01441-9

Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment

Heiko Ganser, Bertold Frech, Andreas Jentsch, Manfred Mürtz, Claire Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho, Wolfgang Urban

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

24 Scopus citations

Abstract

We report line width measurements of a quantum cascade distributed feedback laser by a heterodyne experiment. At currents slightly above threshold and a laser output power higher than 1 mW, the full width at half maximum of the beat signal was narrower than 0.5 MHz, which gives us an upper limit of the laser line width. As reference laser we used a carbon monoxide laser. Both lasers were operating unstabilized in continuous wave mode emitting light at about 5.2 μm.

Original language	English (US)
Pages (from-to)	127-130
Number of pages	4
Journal	Optics Communications
Volume	197
Issue number	1-3
DOIs	https://doi.org/10.1016/S0030-4018(01)01441-9
State	Published - Sep 15 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

Keywords

Beat note
Line width
Mid infrared
Quantum cascade laser
Spectroscopy

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10.1016/S0030-4018(01)01441-9

Cite this

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title = "Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment",

abstract = "We report line width measurements of a quantum cascade distributed feedback laser by a heterodyne experiment. At currents slightly above threshold and a laser output power higher than 1 mW, the full width at half maximum of the beat signal was narrower than 0.5 MHz, which gives us an upper limit of the laser line width. As reference laser we used a carbon monoxide laser. Both lasers were operating unstabilized in continuous wave mode emitting light at about 5.2 μm.",

keywords = "Beat note, Line width, Mid infrared, Quantum cascade laser, Spectroscopy",

author = "Heiko Ganser and Bertold Frech and Andreas Jentsch and Manfred M{\"u}rtz and Claire Gmachl and Federico Capasso and Sivco, {Deborah L.} and Baillargeon, {James N.} and Hutchinson, {Albert L.} and Cho, {Alfred Y.} and Wolfgang Urban",

note = "Funding Information: This work is part of a dissertation at the math./nat. faculty of the Heinrich-Heine University D{\"u}sseldorf. The experiment was supported by the Deusche Forschungsgemeinschaft through the SFB 334 (interaction in molecules). The work performed at Bell Laboratories is supported in part by DARPA/US Army Research Office under contract no. DAAD19-00-C-0096.",

year = "2001",

month = sep,

day = "15",

doi = "10.1016/S0030-4018(01)01441-9",

language = "English (US)",

volume = "197",

pages = "127--130",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment

AU - Ganser, Heiko

AU - Frech, Bertold

AU - Jentsch, Andreas

AU - Mürtz, Manfred

AU - Gmachl, Claire

AU - Capasso, Federico

AU - Sivco, Deborah L.

AU - Baillargeon, James N.

AU - Hutchinson, Albert L.

AU - Cho, Alfred Y.

AU - Urban, Wolfgang

N1 - Funding Information: This work is part of a dissertation at the math./nat. faculty of the Heinrich-Heine University Düsseldorf. The experiment was supported by the Deusche Forschungsgemeinschaft through the SFB 334 (interaction in molecules). The work performed at Bell Laboratories is supported in part by DARPA/US Army Research Office under contract no. DAAD19-00-C-0096.

PY - 2001/9/15

Y1 - 2001/9/15

N2 - We report line width measurements of a quantum cascade distributed feedback laser by a heterodyne experiment. At currents slightly above threshold and a laser output power higher than 1 mW, the full width at half maximum of the beat signal was narrower than 0.5 MHz, which gives us an upper limit of the laser line width. As reference laser we used a carbon monoxide laser. Both lasers were operating unstabilized in continuous wave mode emitting light at about 5.2 μm.

AB - We report line width measurements of a quantum cascade distributed feedback laser by a heterodyne experiment. At currents slightly above threshold and a laser output power higher than 1 mW, the full width at half maximum of the beat signal was narrower than 0.5 MHz, which gives us an upper limit of the laser line width. As reference laser we used a carbon monoxide laser. Both lasers were operating unstabilized in continuous wave mode emitting light at about 5.2 μm.

KW - Beat note

KW - Line width

KW - Mid infrared

KW - Quantum cascade laser

KW - Spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=0035884189&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035884189&partnerID=8YFLogxK

U2 - 10.1016/S0030-4018(01)01441-9

DO - 10.1016/S0030-4018(01)01441-9

M3 - Article

AN - SCOPUS:0035884189

SN - 0030-4018

VL - 197

SP - 127

EP - 130

JO - Optics Communications

JF - Optics Communications

IS - 1-3

ER -

Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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