We review a novel class of femtosecond Cr2+-doped ZnSe and ZnS lasers, which operates in a very important for applications wavelength range between 2 and 3.5 μm and which generates ultrashort optical pulses that are only five optical cycles in duration. Room-temperature Cr2+-lasers provide tens of Watts average power, >70% slope efficiency, ultrabroad tunability (~1400 nm between 2 and 3.4 μm) in the continuous wave regime and GW-level peak powers in the amplified femtosecond regime. Different mode-locking techniques from Kerr-lens to graphene saturable absorbers have been demonstrated, and dispersion compensation methods from bulk materials to chirped mirrors allowed the realization of self-starting few-optical cycle oscillators and the demonstration of a number of applications in spectroscopy and nonlinear optics. The Watt level few-optical cycle Cr:ZnS oscillator1 operating at 2.4 μm is distinguished by extremely short pulse duration of only 41 fs, hundreds of kilowatt peak powers, and tens of nanojoule pulse energies. Using the direct diode-pumping or fiber laser pump sources such a laser can be made reliable and compact, which paves the way to industrial realisation and applications in environmental analysis, oil and gas sensing, hazardous gas detection, breath analysis, fine material processing of semiconductors, composite materials, and glasses.
en
dc.description.sponsorship
The Austrian Science Fund Project
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dc.description.sponsorship
The EU-FET GRAPHENICS
-
dc.description.sponsorship
The Norwe-gian Research Council Projects
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dc.description.sponsorship
The Nano 2021 Project
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dc.language
English
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dc.language.iso
en
-
dc.publisher
IEEE
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dc.relation.ispartof
IEEE Journal of Selected Topics in Quantum Electronics
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
laser
en
dc.subject
mid-infrared
en
dc.subject
near-infrared
en
dc.subject
optical pulse generation
en
dc.subject
laser mode-locking
en
dc.subject
lasertuning
en
dc.subject
sensors
en
dc.subject
chemical hazards
en
dc.subject
gas detectors
en
dc.title
Femtosecond Cr2+-Based Lasers
en
dc.type
Article
en
dc.type
Artikel
de
dc.rights.license
Urheberrechtsschutz
de
dc.rights.license
In Copyright
en
dc.relation.grantno
P24916
-
dc.relation.grantno
Grant 618086
-
dc.relation.grantno
FRITEK/191614
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dc.relation.grantno
N219686
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dc.rights.holder
IEEE 2014
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dc.type.category
Original Research Article
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
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tuw.version
vor
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dcterms.isPartOf.title
IEEE Journal of Selected Topics in Quantum Electronics
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tuw.publication.orgunit
E387 - Institut für Photonik
-
tuw.publisher.doi
10.1109/JSTQE.2014.2341589
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dc.date.onlinefirst
2014-07-02
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dc.identifier.eissn
1558-4542
-
dc.identifier.libraryid
AC11359753
-
dc.identifier.urn
urn:nbn:at:at-ubtuw:3-1295
-
tuw.author.orcid
0000-0002-4421-863X
-
tuw.author.orcid
0000-0002-4703-9653
-
dc.rights.identifier
Urheberrechtsschutz
de
dc.rights.identifier
In Copyright
en
wb.sci
true
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item.fulltext
with Fulltext
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Publications
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http://purl.org/coar/resource_type/c_2df8fbb1
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item.languageiso639-1
en
-
item.openaccessfulltext
Open Access
-
item.openairetype
research article
-
item.grantfulltext
open
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crisitem.author.dept
E387 - Institut für Photonik
-
crisitem.author.dept
E387-01 - Forschungsbereich Photonik
-
crisitem.author.orcid
0000-0002-4703-9653
-
crisitem.author.parentorg
E350 - Fakultät für Elektrotechnik und Informationstechnik