Pump absorption in coiled and twisted double-clad hexagonal fiber: effect of launching conditions and core location

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F18%3A00500237" target="_blank" >RIV/67985882:_____/18:00500237 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2286613" target="_blank" >http://dx.doi.org/10.1117/12.2286613</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2286613" target="_blank" >10.1117/12.2286613</a>

Result language
angličtina
Original language name
Pump absorption in coiled and twisted double-clad hexagonal fiber: effect of launching conditions and core location
Original language description
ver extending applications of fiber lasers require energy efficient, high-power, small footprint and reliable fiber lasers and laser wavelength versatility. To meet these demands, next generation of active fibers for high-power fiber lasers is coming out that will eventually offer tailored spectroscopic properties, high robustness and reduced cooling requirements and improved efficiency through tailored pump absorption. We report on numerical modelling of the efficiency of the pump absorption in double clad active fibers with hexagonal shape of the inner cladding cross section and rare-earth doped core. We analyze both the effect of different radii of the spool on which the fiber is coiled and different fiber twisting rates. Two different launching conditions were investigated: the Gaussian input pump beam and a speckle pattern that mimics the output of the pump laser diode pigtail. We have found that by asymmetric position of the rare-earth-doped core we can significantly improve the pump absorption
Czech name
—
Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Fiber Lasers XV: Technology and Systems, Proceedings of SPIE
ISBN
978-151061509-0
ISSN
0277-786X
e-ISSN
1996-756X
Number of pages
6
Pages from-to
—
Publisher name
SPIE
Place of publication
Bellingham
Event location
San Francisco
Event date
Jan 29, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000432469600072

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