Pulsed 2 μm fiber lasers for direct and pumping applications in defence and security
Identifieur interne : 000E10 ( Main/Exploration ); précédent : 000E09; suivant : 000E11Pulsed 2 μm fiber lasers for direct and pumping applications in defence and security
Auteurs : Marc Eichhorn [France]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
- Quasi accord phase, Optique non linéaire, Rayonnement IR moyen, Durée impulsion, Fibre verre, Fibre optique, Silice, Codopage, Verre fluorure, Application militaire, Addition thulium, Thulium, Holmium, Domaine temps ns, Contremesure, Méthode optique, GaAs, 0130C, 0707D, 0760, 8920D, Fibre dopée thulium.
English descriptors
- KwdEn :
Abstract
The paper gives an overview on pulsed 2 μm fiber laser technology that has strongly evolved during the last years. In the beginning, 2 μm fiber-amplifier systems have been considered to allow short-pulse generation at high repetition rates for pumping mid-IR conversion elements due to their possibility of generating short pulses by properly-driven laser diodes and successive amplification. However, this scheme turned out to be rather complex in architecture and needed low-phonon fluoride-glass fibers for efficient energy storage. Then a new technology has been developed to provide short pulses directly from a single, Q-switched fiber laser at very high repetition rates with silica fibers. Even taking into account the high phonon energies of these fibers, an efficient operation is possible. These fibers are also much more durable than fluoride fibers and thus better suited for military applications. Thulium-doped and thulium-holmium-codoped fibers are therefore the most promising candidates for pulse generation when some-ten-ns pulses at 100 kHz or more are needed. Average powers of over 32 W have been achieved with pulse durations down to 42 ns at > 100 kHz with Thulium-doped fibers. Tm-Ho codoping can provide longer emission wavelengths towards 2.1 μm, thus allowing direct conversion towards the mid-IR using ZGP crystals. On the Holmium emission, pulses of down to 58 ns have been achieved at average powers exceeding 14 W, being currently only limited by the available pump power. The theory of this short-pulse generation will also be explained. Pumping, e.g., quasi-phase-matched nonlinear GaAs, with a Tm-Ho-doped fiber laser, > 2 W of average power has been achieved in the mid-IR.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Pulsed 2 μm fiber lasers for direct and pumping applications in defence and security</title><author><name sortKey="Eichhorn, Marc" sort="Eichhorn, Marc" uniqKey="Eichhorn M" first="Marc" last="Eichhorn">Marc Eichhorn</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>French-German Research Institute of Saint-Louis ISL, 5 rue du Général Cassagnou</s1><s2>68301 Saint-Louis</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Alsace (région administrative)</region><settlement type="city">Saint-Louis</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">11-0299999</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 11-0299999 INIST</idno><idno type="RBID">Pascal:11-0299999</idno><idno type="wicri:Area/Pascal/Corpus">000247</idno><idno type="wicri:Area/Pascal/Curation">000247</idno><idno type="wicri:Area/Pascal/Checkpoint">000308</idno><idno type="wicri:explorRef" wicri:stream="Pascal" wicri:step="Checkpoint">000308</idno><idno type="wicri:doubleKey">0277-786X:2010:Eichhorn M:pulsed:m:fiber</idno><idno type="wicri:Area/Main/Merge">000E25</idno><idno type="wicri:Area/Main/Curation">000E10</idno><idno type="wicri:Area/Main/Exploration">000E10</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Pulsed 2 μm fiber lasers for direct and pumping applications in defence and security</title><author><name sortKey="Eichhorn, Marc" sort="Eichhorn, Marc" uniqKey="Eichhorn M" first="Marc" last="Eichhorn">Marc Eichhorn</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>French-German Research Institute of Saint-Louis ISL, 5 rue du Général Cassagnou</s1><s2>68301 Saint-Louis</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Alsace (région administrative)</region><settlement type="city">Saint-Louis</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Codoping</term><term>Countermeasurement</term><term>Fluoride glass</term><term>Glass fibers</term><term>Holmium</term><term>Mid infrared radiation</term><term>Military application</term><term>Nonlinear optics</term><term>Optical fibers</term><term>Optical method</term><term>Pulse width</term><term>Quasi-phase matching</term><term>Silica</term><term>Thulium</term><term>Thulium additions</term><term>Thulium-doped fibers</term><term>ns range</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Quasi accord phase</term><term>Optique non linéaire</term><term>Rayonnement IR moyen</term><term>Durée impulsion</term><term>Fibre verre</term><term>Fibre optique</term><term>Silice</term><term>Codopage</term><term>Verre fluorure</term><term>Application militaire</term><term>Addition thulium</term><term>Thulium</term><term>Holmium</term><term>Domaine temps ns</term><term>Contremesure</term><term>Méthode optique</term><term>GaAs</term><term>0130C</term><term>0707D</term><term>0760</term><term>8920D</term><term>Fibre dopée thulium</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The paper gives an overview on pulsed 2 μm fiber laser technology that has strongly evolved during the last years. In the beginning, 2 μm fiber-amplifier systems have been considered to allow short-pulse generation at high repetition rates for pumping mid-IR conversion elements due to their possibility of generating short pulses by properly-driven laser diodes and successive amplification. However, this scheme turned out to be rather complex in architecture and needed low-phonon fluoride-glass fibers for efficient energy storage. Then a new technology has been developed to provide short pulses directly from a single, Q-switched fiber laser at very high repetition rates with silica fibers. Even taking into account the high phonon energies of these fibers, an efficient operation is possible. These fibers are also much more durable than fluoride fibers and thus better suited for military applications. Thulium-doped and thulium-holmium-codoped fibers are therefore the most promising candidates for pulse generation when some-ten-ns pulses at 100 kHz or more are needed. Average powers of over 32 W have been achieved with pulse durations down to 42 ns at > 100 kHz with Thulium-doped fibers. Tm-Ho codoping can provide longer emission wavelengths towards 2.1 μm, thus allowing direct conversion towards the mid-IR using ZGP crystals. On the Holmium emission, pulses of down to 58 ns have been achieved at average powers exceeding 14 W, being currently only limited by the available pump power. The theory of this short-pulse generation will also be explained. Pumping, e.g., quasi-phase-matched nonlinear GaAs, with a Tm-Ho-doped fiber laser, > 2 W of average power has been achieved in the mid-IR.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li></region><settlement><li>Saint-Louis</li></settlement></list><tree><country name="France"><region name="Grand Est"><name sortKey="Eichhorn, Marc" sort="Eichhorn, Marc" uniqKey="Eichhorn M" first="Marc" last="Eichhorn">Marc Eichhorn</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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