Spatial Distribution of Photodarkening in Large Mode Area Ytterbium Doped Fibers

2008 ◽  
Author(s):  
Mircea Hotoleanu ◽  
Joona Koponen ◽  
Teemu Kokki
Keyword(s):  
Spatial Distribution ◽  
Large Mode Area ◽  
Doped Fibers ◽  
Mode Area

Low numerical aperature large-mode-area neodymium-doped fibers fabricated by SPCVD and ASD for laser operation near 920nm

2020 ◽  
Author(s):  
Alexandre Barnini ◽  
Kilian Le Corre ◽  
Louanne Kervella ◽  
Thierry Robin ◽  
Pascal Guitton ◽  
...  
Keyword(s):  
Laser Operation ◽  
Large Mode Area ◽  
Doped Fibers ◽  
Mode Area

Demonstration of spatial distribution of photodarkening in Yb-doped large-mode-area fibre laser

2008 ◽  
Vol 44 (16) ◽  
pp. 960 ◽  
Author(s):  
J. Koponen ◽  
M. Laurila ◽  
M. Hotoleanu
Keyword(s):  
Spatial Distribution ◽  
Fibre Laser ◽  
Large Mode Area ◽  
Mode Area

Joint Residual Stress/Refractive Index Characterization of Large-Mode-Area Erbium-Doped Fibers

2013 ◽  
Vol 31 (14) ◽  
pp. 2426-2433 ◽  
Author(s):  
Ting Feng ◽  
M. H. Jenkins ◽  
Fengping Yan ◽  
T. K. Gaylord
Keyword(s):  
Residual Stress ◽  
Refractive Index ◽  
Large Mode Area ◽  
Erbium Doped ◽  
Doped Fibers ◽  
Mode Area

Arc fusion splicing effects in large-mode-area single-mode ytterbium-doped fibers

2013 ◽  
Vol 52 (32) ◽  
pp. 7706 ◽  
Author(s):  
Ting Feng ◽  
Micah H. Jenkins ◽  
Fengping Yan ◽  
Thomas K. Gaylord
Keyword(s):  
Single Mode ◽  
Large Mode Area ◽  
Doped Fibers ◽  
Mode Area

scholarly journals Amplification characteristics in active tapered segmented cladding fiber with large mode area

2021 ◽  
Vol 9 ◽  
Author(s):  
Caijian Xie ◽  
Tigang Ning ◽  
Jingjing Zheng ◽  
Li Pei ◽  
Jianshuai Wang ◽  
...  
Keyword(s):  
High Power ◽  
Heat Load ◽  
Nonlinear Effects ◽  
Single Mode ◽  
Large Mode Area ◽  
High Loss ◽  
Effective Mode Area ◽  
Steady State Rate ◽  
State Rate ◽  
Mode Area

Abstract A kind of tapered segmented cladding fiber (T-SCF) with large mode area (LMA) is proposed, and the mode and amplification characteristics of T-SCFs with concave, linear, and convex tapered structures are investigated based on finite-element method (FEM) and few-mode steady-state rate equation. Simulation results indicate that the concave tapered structure can introduce high loss for high-order modes (HOMs) that is advantageous to achieve single-mode operation, whereas the convex tapered structure provides large effective mode area that can help to mitigate nonlinear effects. Meanwhile, the small-to-large amplification scheme shows further advantages on stripping off HOMs, and the large-to-small amplification scheme decreases the heat load density induced by the high-power pump. Moreover, single-mode propagation performance, effective mode area, and heat load density of the T-SCF are superior to those of tapered step index fiber (T-SIF). These theoretical model and numerical results can provide instructive suggestions for designing high-power fiber lasers and amplifiers.

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