Enhanced pump absorption efficiency in coiled and twisted double-clad fibers for fiber lasers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F19%3A00519192" target="_blank" >RIV/67985882:_____/19:00519192 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21340/19:00339217

Result on the web

<a href="http://dx.doi.org/10.1109/ICTON.2019.8840274" target="_blank" >http://dx.doi.org/10.1109/ICTON.2019.8840274</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICTON.2019.8840274" target="_blank" >10.1109/ICTON.2019.8840274</a>

Result language

angličtina

Original language name

Enhanced pump absorption efficiency in coiled and twisted double-clad fibers for fiber lasers

Original language description

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

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/GA19-03141S" target="_blank" >GA19-03141S: Research of novel geometries and layouts of double-clad rare-earth-doped fibers for high power fiber lasers</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

21st International Conference on Transparent Optical Networks, ICTON 2019

ISBN

978-1-7281-2779-8

ISSN

2162-7339

e-ISSN

2161-2064

Number of pages

4

Pages from-to

Th.B6.1

Publisher name

IEEE

Place of publication

Varšava

Event location

Angers

Event date

Jul 9, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—