26.5W of nanosecond vortex laser based on a stressed Yb-doped fiber amplifier was demonstrated. The peak power of 70 kW was obtained, corresponding to optical-optical efficiency of 41 %.
© 2012 OSA
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3580) Lasers and laser optics : Lasers, solid-state
(080.4865) Geometric optics : Optical vortices
M. Koyama, A. Shimomura, T. Hirose, K. Miyamoto, and T. Omatsu, "Over 25W nanosecond vortex laser based on a stressed Yb-doped fiber power amplifier," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (Optical Society of America, 2012), paper QTh4E.8.
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