We report a multimode, double-clad, Yb-doped fiber amplifier that produces diffraction-limited, 0.8-ns pulses with energies of 255 μJ and peak powers in excess of 300 kW at a repetition rate of ∼8 kHz . Single-transverse-mode operation was obtained by bend-loss-induced mode filtering of the gain fiber.
© 2002 Optical Society of America
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.4480) Lasers and laser optics : Optical amplifiers
Fabio Di Teodoro, Jeffrey P. Koplow, Sean W. Moore, and Dahv A. V. Kliner, "Diffraction-limited, 300-kW peak-power pulses from a coiled multimode fiber amplifier," Opt. Lett. 27, 518-520 (2002)