High average power large mode area (LMA) fiber amplifiers

High average power large mode area (LMA) fiber amplifiers

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This chapter is devoted to summarizing the current state of industrial fiber lasers and focusing on the key challenges to extending the power levels of combinable narrowband fiber amplifiers to many multikilowatts suitable for Directed Energy application.

Chapter Contents:

  • 6.1 A brief history of fiber lasers
  • 6.2 Advantages of fiber lasers
  • 6.3 Rare-earth-doped fibers
  • 6.3.1 Fundamentals of optical fibers
  • 6.3.2 Design of fiber amplifiers
  • 6.4 Limitations of high average power Yb-doped fiber amplifiers
  • 6.5 Overcoming the limitations of power scaling in combinable LMA fibers
  • 6.5.1 Mitigating SBS
  • 6.5.2 Mitigating TMI
  • 6.5.3 Chirally coupled core fiber technology
  • 6.5.4 Conclusions
  • Acknowledgments
  • References

Inspec keywords: laser beams; optical fibre amplifiers; laser beam applications

Other keywords: industrial fiber lasers; Directed Energy application; narrowband fiber amplifiers; high average power large mode area fiber amplifiers

Subjects: Design of specific laser systems; Fibre lasers and amplifiers; Laser applications; Textbooks; Laser beam interactions and properties; Laser beam characteristics and interactions; Laser applications; Fibre lasers and amplifiers

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