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dc.contributor.author
Gürel, Kutan
dc.contributor.author
Schilt, Stéphane
dc.contributor.author
Bismuto, Alfredo
dc.contributor.author
Bidaux, Yves
dc.contributor.author
Tardy, Camille
dc.contributor.author
Blaser, Stéphane
dc.contributor.author
Gresch, Tobias
dc.contributor.author
Südmeyer, Thomas
dc.date.accessioned
2019-09-23T15:26:09Z
dc.date.available
2017-06-12T14:48:01Z
dc.date.available
2019-09-23T15:26:09Z
dc.date.issued
2016
dc.identifier.other
10.3390/photonics3030047
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/121883
dc.identifier.doi
10.3929/ethz-b-000121883
dc.description.abstract
We present a detailed experimental investigation of the use of a novel actuator for frequency tuning and modulation in a quantum cascade laser (QCL) based on a resistive integrated heater (IH) placed close to the active region. This new actuator is attractive for molecular spectroscopy applications as it enables fast tuning of the QCL wavelength with a minor influence on the optical output power, and is electrically-controlled. Using a spectroscopic setup comprising a low-pressure gas cell, we measured the tuning and modulation properties of a QCL emitting at 7.8 μm as a function of the active region and IH currents. We show that a current step applied to the IH enables the laser frequency to be switched by 500 MHz in a few milliseconds, as fast as for a step of the current in the active region, and limited by heat dissipation towards the laser sub-mount. The QCL optical frequency can be modulated up to ~100 kHz with the IH current, which is one order of magnitude slower than for the QCL current, but sufficient for many spectroscopic applications. We discuss the experimental results using a thermal model of the heat transfer in terms of cascaded low-pass filters and extract the respective cut-off frequencies. Finally, we present a proof-of-principle experiment of wavelength modulation spectroscopy of a N2O transition performed with a modulation of the IH current and show some potential benefits in comparison to QCL current modulation, which results from the reduced associated amplitude modulation.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
MDPI
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
quantum cascade laser
en_US
dc.subject
Frequency tuning
en_US
dc.subject
Modulation spectroscopy
en_US
dc.title
Frequency Tuning and Modulation of a Quantum Cascade Laser with an Integrated Resistive Heater
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2016-07-30
ethz.journal.title
Photonics
ethz.journal.volume
3
en_US
ethz.journal.issue
3
en_US
ethz.pages.start
47
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.publication.place
Basel
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02510 - Institut für Quantenelektronik / Institute for Quantum Electronics::03759 - Faist, Jérôme / Faist, Jérôme
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02510 - Institut für Quantenelektronik / Institute for Quantum Electronics::03759 - Faist, Jérôme / Faist, Jérôme
en_US
ethz.date.deposited
2017-06-12T14:54:11Z
ethz.source
ECIT
ethz.identifier.importid
imp593654d00797069634
ethz.ecitpid
pub:184145
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T03:19:55Z
ethz.rosetta.lastUpdated
2024-02-02T09:24:19Z
ethz.rosetta.versionExported
true
ethz.COinS
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