Počet záznamů: 1
Enhanced pump absorption efficiency in coiled and twisted double-clad fibers for fiber lasers
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SYSNO ASEP 0519192 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Enhanced pump absorption efficiency in coiled and twisted double-clad fibers for fiber lasers Tvůrce(i) Peterka, Pavel (URE-Y) RID
Koška, Pavel (URE-Y)
Jasim, Ali (URE-Y)
Kanagaraj, Nithyanandan (URE-Y)
Aubrecht, Jan (URE-Y) RID
Kamrádek, Michal (URE-Y)
Podrazký, Ondřej (URE-Y) RID
Todorov, Filip (URE-Y)
Kašík, Ivan (URE-Y) RID
Honzátko, Pavel (URE-Y) RIDCelkový počet autorů 10 Číslo článku Th.B6.1 Zdroj.dok. 21st International Conference on Transparent Optical Networks, ICTON 2019. - Varšava : IEEE, 2019 / Jaworski M. ; Marciniak M. - ISSN 2162-7339 - ISBN 978-1-7281-2779-8 Poč.str. 4 s. Forma vydání Tištěná - P Akce 21st International Conference on Transparent Optical Networks, ICTON 2019 Datum konání 09.07.2019 - 13.07.2019 Místo konání Angers Země FR - Francie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova Optical pumping ; Rare-earth-doped fibers ; Thulium-doped fibers Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP GA19-03141S GA ČR - Grantová agentura ČR Institucionální podpora URE-Y - RVO:67985882 EID SCOPUS 85073075373 DOI 10.1109/ICTON.2019.8840274 Anotace High-power operation of fiber lasers was mainly enabled by the invention of cladding-pumping in a double-clad fiber structure. Pump absorption is enhanced by broken circular symmetry of inner cladding cross-sections and by mode-scrambling of the pump modes resulting from unconventional fiber coiling. However, theoretical studies were limited to the assumption of a straight fiber until recently, when the rigorous model accounting for double-clad fiber bending and twisting was described. It was found that squeezing of the effective area of the pump radiation due to fiber bending plays an important role in cladding-pump absorption enhancement. We review results of numerical modeling of pump absorption in various types of double-clad fibers, e.g., with cross-section shape of hexagon, stadium, and circle, two-fiber bundle (so-called GTWave fiber structure) a panda fibers are also analyzed. The presented results can have a practical application and potential impact in the construction of fiber lasers: with pump absorption efficiency optimized by our new model (the other models did not take into account fiber twist), the double-clad fiber of shorter length can be used in the fiber lasers and amplifiers. This dramatically minimizes the deleterious effect of background losses and nonlinear effects Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2020
Počet záznamů: 1