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High power fiber lasers

High power fiber lasers

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This review concentrates on the progress and developments that have led to explosive growth in high power continuous wave (CW) fiber lasers over the last decade. Here we arbitrarily defined high power fiber operation as being close to a single mode in beam output with powers in the kilowatt range. This growth has largely been led by Yb fiber lasers up to now. However, in this review, we also highlight the potential for high power, high brightness operation of two alternative approaches, thulium fiber lasers that operate at 2 mm wavelength, and CW Raman fiber lasers (RFLs), which have yet to reach kW power levels.

Chapter Contents:

  • 8.1 Introduction
  • 8.1.1 Diode-laser pumped solid-state laser media
  • 8.2 High power Yb fiber lasers
  • 8.2.1 Yb: silica spectroscopy
  • 8.2.2 1 micron fiber lasers
  • 8.2.3 Fiber laser architectures and fiber design
  • High power fiber designs
  • High power fiber laser architectures
  • 8.2.4 Nonlinear optical loss mechanisms
  • Stimulated Raman scattering
  • Stimulated Brillouin scattering
  • Transverse mode instability
  • 8.3 High power TM fiber lasers
  • 8.3.1 Spectroscopic properties
  • 8.3.2 Cross-relaxation pumping with 790 nm diodes
  • 8.3.3 In-band pumping with 1,550—1,950 nm sources
  • 8.4 Other fiber laser media
  • 8.4.1 Er-fiber lasers
  • Concentration quenching
  • Er: Yb codoped fibers
  • Yb-free Er-doped fiber
  • 8.5 High power Raman lasers
  • 8.5.1 Raman fiber lasers for wavelength conversion
  • 8.5.2 Raman fiber lasers for brightness enhancement
  • 8.6 Conclusions
  • References

Inspec keywords: laser beams; optical pumping; ytterbium; fibre lasers; reviews; brightness; Raman lasers; thulium

Other keywords: thulium fiber lasers; CW Raman fiber lasers; high power fiber operation; high power continuous wave fiber lasers; review; beam output; single mode; Yb fiber lasers; high brightness operation; wavelength 2.0 mm; power levels

Subjects: Laser beam interactions and properties; Reviews and tutorial papers; resource letters; Laser beam characteristics and interactions; Fibre lasers and amplifiers; Fibre lasers and amplifiers; Design of specific laser systems

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