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39-mW annular excitation of ytterbium fiber laser with radial polarization

Laser Physics Letters, ISSN: 1612-2011, Vol: 4, Issue: 11, Page: 814-818
2007
  • 30
    Citations
  • 0
    Usage
  • 4
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    30
    • Citation Indexes
      30
  • Captures
    4

Article Description

An efficient radial-polarization Yb-fiber laser with an intracavity Brewster axicon is demonstrated. The fraction of ASE at low pumping and parasitical oscillation are minimized by adopting bidirectional pumping and angle-polished fiber end. So far, except for the improvement in polarization purity and cylindrical symmetry of output beam, 39-mW output power is obtained at 460-mW launched pump power with 13.8% slope efficiency. And also a new type of low-V-parameter multi-mode gain fiber with doughnut concentration distribution of active ions in fiber core profile is predicted to be promising in improving the laser performance further. A figure is presented. The far-field intensity distribution of the forward output beam at P = 460 mW. © 2007 by Astro Ltd. Published exclusively by Wiley-VCH Verlag GmbH & Co. KGaA.

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