Enhanced pump absorption efficiency in coiled and twisted double-clad thulium-doped fibers.
Identifieur interne : 000017 ( PubMed/Corpus ); précédent : 000016; suivant : 000018Enhanced pump absorption efficiency in coiled and twisted double-clad thulium-doped fibers.
Auteurs : Pavel Koška ; Pavel Peterka ; Jan Aubrecht ; Ond Ej Podrazk ; Filip Todorov ; Martin Becker ; Yauhen Baravets ; Pavel Honzátko ; Ivan KašíkSource :
- Optics express [ 1094-4087 ] ; 2016.
Abstract
Results of the first experimental demonstration of the recently proposed technique for improvement of the pump absorption in double-clad fibers by their simultaneous coiling and twisting are reported. The peak absorption (14 dB) of 3-m long hexagonal thulium-doped fiber was increased by 8 dB by its simultaneous coiling and twisting. Explanation of the effect is given by numerical modelling of the pump absorption in hexagonal and panda-type double-clad fibers. Improvement of fiber laser performance was also proved. The slope efficiency increased from 19.6% of the straight fiber to 23.9% of the coiled only fiber and 29.4% of the simultaneously coiled and twisted fiber.
PubMed: 26832241
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pubmed:26832241Le document en format XML
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<author><name sortKey="Koska, Pavel" sort="Koska, Pavel" uniqKey="Koska P" first="Pavel" last="Koška">Pavel Koška</name>
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<author><name sortKey="Becker, Martin" sort="Becker, Martin" uniqKey="Becker M" first="Martin" last="Becker">Martin Becker</name>
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<author><name sortKey="Baravets, Yauhen" sort="Baravets, Yauhen" uniqKey="Baravets Y" first="Yauhen" last="Baravets">Yauhen Baravets</name>
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<author><name sortKey="Honzatko, Pavel" sort="Honzatko, Pavel" uniqKey="Honzatko P" first="Pavel" last="Honzátko">Pavel Honzátko</name>
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<front><div type="abstract" xml:lang="en">Results of the first experimental demonstration of the recently proposed technique for improvement of the pump absorption in double-clad fibers by their simultaneous coiling and twisting are reported. The peak absorption (14 dB) of 3-m long hexagonal thulium-doped fiber was increased by 8 dB by its simultaneous coiling and twisting. Explanation of the effect is given by numerical modelling of the pump absorption in hexagonal and panda-type double-clad fibers. Improvement of fiber laser performance was also proved. The slope efficiency increased from 19.6% of the straight fiber to 23.9% of the coiled only fiber and 29.4% of the simultaneously coiled and twisted fiber.</div>
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<Abstract><AbstractText>Results of the first experimental demonstration of the recently proposed technique for improvement of the pump absorption in double-clad fibers by their simultaneous coiling and twisting are reported. The peak absorption (14 dB) of 3-m long hexagonal thulium-doped fiber was increased by 8 dB by its simultaneous coiling and twisting. Explanation of the effect is given by numerical modelling of the pump absorption in hexagonal and panda-type double-clad fibers. Improvement of fiber laser performance was also proved. The slope efficiency increased from 19.6% of the straight fiber to 23.9% of the coiled only fiber and 29.4% of the simultaneously coiled and twisted fiber.</AbstractText>
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