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Proceedings Article

High-peak-power (>1.2 MW) pulsed fiber amplifier

[+] Author Affiliations
Roger L. Farrow, Dahv A. V. Kliner, Paul E. Schrader, Alexandra A. Hoops, Sean W. Moore, G. R. Hadley, Randal L. Schmitt

Sandia National Labs.

Proc. SPIE 6102, Fiber Lasers III: Technology, Systems, and Applications, 61020L (February 23, 2006); doi:10.1117/12.646815
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From Conference Volume 6102

  • Fiber Lasers III: Technology, Systems, and Applications
  • Andrew J. W. Brown; Johan Nilsson; Donald J. Harter; Andreas Tünnermann
  • San Jose, CA | January 21, 2006

abstract

We report results from Yb-doped fiber amplifiers seeded with two microchip lasers having 0.38-ns and 2.3-ns pulse durations. The shorter duration seed resulted in output pulses with a peak power of >1.2 MW and pulse energy of 0.67 mJ. Peak power was limited by nonlinear processes that caused breakup and broadening of the pulse envelope as the pump power increased. The 2.3-ns duration seed laser resulted in output pulses with a peak power of >300 kW and pulse energy of >1.1 mJ. Pulse energies were limited by the onset of stimulated Brillouin scattering and ultimately by internal optical damage (fluences in excess of 400 J/cm2 were generated). In both experiments, nearly diffraction-limited beam profiles were obtained, with M2 values of <1.2. Preliminary results of a pulse-amplification model are in excellent agreement with the experimental results of the amplifiers operating in the low-to-moderate gain-depletion regime.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Roger L. Farrow ; Dahv A. V. Kliner ; Paul E. Schrader ; Alexandra A. Hoops ; Sean W. Moore, et al.
"High-peak-power (>1.2 MW) pulsed fiber amplifier", Proc. SPIE 6102, Fiber Lasers III: Technology, Systems, and Applications, 61020L (February 23, 2006); doi:10.1117/12.646815; http://dx.doi.org/10.1117/12.646815


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