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Proceedings Article

A multi-channel phase locked fibre bundle laser

[+] Author Affiliations
David C. Jones, Andrew J. Turner, Andrew M. Scott, Steven M. Stone

QinetiQ Ltd. (United Kingdom)

Roy G. Clark, Christopher Stace, Craig D. Stacey

BAE Systems (United Kingdom)

Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801V (February 17, 2010); doi:10.1117/12.847145
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From Conference Volume 7580

  • Fiber Lasers VII: Technology, Systems, and Applications
  • Kanishka Tankala
  • San Francisco, California, USA | January 23, 2010

abstract

We report on the phase locking of a fibre bundle laser based on a single frequency oscillator coupled into four fibre amplifiers to provide a coherent beam of over 600 W. The oscillator was phase modulated to a width of up to 2 GHz to increase the threshold for stimulated Brillouin scattering and then a fraction split off and frequency shifted to form a reference beam. The oscillator output was amplified by end-pumped fibre amplifiers based on 20 μm core Yb doped fibre to provide a power of up to 260 W per channel. The beams combined to form a coherent output with phase errors of a twentieth of a wave, unaffected by the spectral broadening.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

David C. Jones ; Andrew J. Turner ; Andrew M. Scott ; Steven M. Stone ; Roy G. Clark, et al.
"A multi-channel phase locked fibre bundle laser", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801V (February 17, 2010); doi:10.1117/12.847145; http://dx.doi.org/10.1117/12.847145


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