Elimination of self-mode-locking pulses in high-power continuous-wave Yb-doped fiber lasers with external feedback

2017 ◽  
Vol 56 (32) ◽  
pp. 9079
Author(s):  
Haiyang Xu ◽  
Man Jiang ◽  
Pu Zhou ◽  
Guomin Zhao ◽  
Xijia Gu
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Mode Locking ◽  
External Feedback

Four-wave mixing effect on high-power continuous-wave all-fiber lasers

2018 ◽  
Vol 32 (23) ◽  
pp. 1850275
Author(s):  
Jinkun Zheng ◽  
Wei Zhao ◽  
Baoyin Zhao ◽  
Zhe Li ◽  
Gang Li ◽  
...  
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Beam Quality ◽  
Matching Condition ◽  
Four Wave Mixing ◽  
Theoretical Description ◽  
Phase Matching ◽  
Wave Mixing ◽  
Mixing Effect

A four-wave mixing effect on high-power continuous-wave fiber lasers has been demonstrated theoretically and experimentally. Detailed theoretical description of phase matching is presented and we found that the phase matching condition is satisfied at the frequency shift of 5.16 THz. While the intensity in fiber core region is more than about 394 MW/cm2, the four-wave mixing products of 1100 nm and 1060 nm were also observed in high-power all-fiber laser. The comparison shows that the experiment result is in good agreement with the simulation result. In addition, the beam quality deterioration for the laser is caused by the four-wave mixing effect and the mode instability. The [Formula: see text] factor measured at maximal intensity of 478 MW/cm2 is 2.80.

Optimizing waveguide array mode-locking for high-power fiber lasers

2009 ◽  
Author(s):  
Brandon G. Bale ◽  
J. Nathan Kutz ◽  
Bjorn Sandstede
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Mode Locking ◽  
Waveguide Array

Power scalability of a continuous-wave high-power Er-Yb co-doped fiber amplifier pumped by Yb-doped fiber lasers

2021 ◽  
Vol 60 (7) ◽  
pp. 2046
Author(s):  
Weilong Yu ◽  
Ping Yan ◽  
Qirong Xiao ◽  
Tiancheng Qi ◽  
Dan Li ◽  
...  
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Fiber Amplifier ◽  
Co Doped

High-power continuous wave mid-infrared fluoride glass fiber lasers

2022 ◽  
pp. 505-595
Author(s):  
Martin Bernier ◽  
Vincent Fortin ◽  
Ori Henderson-Sapir ◽  
Stuart Jackson ◽  
Frédéric Jobin ◽  
...  
Keyword(s):  
Glass Fiber ◽  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Fluoride Glass ◽  
Mid Infrared

scholarly journals High power ytterbium-doped fiber lasers — fundamentals and applications

2014 ◽  
Vol 28 (12) ◽  
pp. 1442009 ◽  
Author(s):  
Michalis N. Zervas
Keyword(s):  
Material Processing ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Industrial Applications ◽  
Optical Damage ◽  
Fiber Nonlinearities ◽  
Fundamental Properties ◽  
Power Evolution

In this paper, we summarize the fundamental properties and review the latest developments in high power ytterbium-doped fiber (YDF) lasers. The review is focused primarily on the main fiber laser configurations and the related cladding pumping issues. Special attention is placed on pump combination techniques and the parameters that affect the brightness enhancements observed in high power fiber lasers. The review also includes the major limitations imposed by fiber nonlinearities and other parasitic effects, such as optical damage, modal instabilities and photodarkening. The paper summarizes the power evolution in continuous-wave (CW) and pulsed YDF lasers and their impact on material processing and other industrial applications.

scholarly journals Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

2021 ◽  
Author(s):  
Hossein Fathi ◽  
Mikko Närhi ◽  
Regina Gumenyuk
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Beam Quality ◽  
Coherent Beam ◽  
Laser Source ◽  
Coherent Beam Combining ◽  
Beam Combining ◽  
Wide Range

Fiber laser technology has been demonstrated as a versatile and reliable approach for laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges are discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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