<title>Recent progress in high-power fiber lasers for high-power and high-quality material processing applications</title>

High power fiber lasers are gaining increasing shares in the laser material processing market due to their many advantages over gas and solid-state lasers. The design approaches for the typical architectures used in continuous emission fiber lasers are revised and the impact of the different choices on the specifications of the cavity components are analyzed. Then, some results on the fabrication of key components for an all-fiber setup, such as pump (PCs) and signal combiners (SCs), are reported. Finally, an example of a high power module, suitable for the development of an over 4 kW system is presented.

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Special Issue on Recent High-quality Optical Beam Control Technology. High Quality Technology of High Power Laser Beam Used for Material Processing.

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.60.1086 ◽

1994 ◽

Vol 60 (8) ◽

pp. 1086-1090

Author(s):

Kunio YOSHIDA ◽

Hidetsugu YOSHIDA

Keyword(s):

Material Processing ◽

Laser Beam ◽

High Power ◽

Optical Beam ◽

Control Technology ◽

High Power Laser ◽

Special Issue ◽

Power Laser ◽

High Quality ◽

Quality Technology

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High power ytterbium-doped fiber lasers — fundamentals and applications

International Journal of Modern Physics B ◽

10.1142/s0217979214420090 ◽

2014 ◽

Vol 28 (12) ◽

pp. 1442009 ◽

Cited By ~ 24

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.

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