High power modal instability measurements of very large mode area (VLMA) step index fibers

2013 ◽  
Author(s):  
Doruk Engin ◽  
Wei Lu ◽  
Horacio Verdun ◽  
Shantanu Gupta
Keyword(s):  
High Power ◽  
Large Mode Area ◽  
Step Index ◽  
Mode Area

High absorption large-mode area step-index fiber for tandem-pumped high-brightness high-power lasers

2020 ◽  
Vol 8 (10) ◽  
pp. 1599
Author(s):  
Kang-Jie Lim ◽  
Samuel Kai-Wen Seah ◽  
Joash Yong’En Ye ◽  
Wendy Weiying Lim ◽  
Chu-Perng Seah ◽  
...  
Keyword(s):  
High Power ◽  
High Power Lasers ◽  
High Brightness ◽  
Large Mode Area ◽  
Step Index ◽  
Mode Area ◽  
High Absorption ◽  
Step Index Fiber

Ultra-low NA step-index large mode area Yb-doped fiber with a germanium doped cladding for high power pulse amplification

2020 ◽  
Vol 45 (14) ◽  
pp. 3828 ◽  
Author(s):  
Raghuraman Sidharthan ◽  
Di Lin ◽  
Kang Jie Lim ◽  
Huizi Li ◽  
Serene Huiting Lim ◽  
...  
Keyword(s):  
High Power ◽  
Large Mode Area ◽  
Pulse Amplification ◽  
Step Index ◽  
Power Pulse ◽  
Mode Area ◽  
High Power Pulse

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.

Large Mode Area Solid-Core Photonic Bandgap Yb-doped Fiber with Hetero-Structured Cladding for Compact High-Power Laser Systems

2021 ◽  
pp. 1-1
Author(s):  
Olivier Vanvincq ◽  
Andy Cassez ◽  
Remi Habert ◽  
Hicham El Hamzaoui ◽  
Karen Baudelle ◽  
...  
Keyword(s):  
High Power ◽  
Photonic Bandgap ◽  
Solid Core ◽  
High Power Laser ◽  
Power Laser ◽  
Large Mode Area ◽  
Laser Systems ◽  
Mode Area

Design of large mode area all-solid anti-resonant fiber for high power lasers

2021 ◽  
Author(s):  
Xin Zhang ◽  
Shoufei Gao ◽  
Yingying Wang ◽  
Wei Ding ◽  
Pu Wang
Keyword(s):  
High Power ◽  
High Power Lasers ◽  
Large Mode Area ◽  
Mode Area

High-power/energy large mode area tapered fiber amplifiers

2021 ◽  
Author(s):  
Vincent Roy ◽  
Paul Grenier ◽  
Louis Desbiens ◽  
Sebastien Deshaies ◽  
Marc Deladurantaye ◽  
...  
Keyword(s):  
High Power ◽  
Fiber Amplifiers ◽  
Large Mode Area ◽  
Tapered Fiber ◽  
Mode Area
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