A novel cladding pumped Nd<sup>3+</sup> fiber laser operating in an enhanced <i>Q</i>-switched regime with a stable repetition rate is described. By exploiting fiber nonlinearities in the laser cavity, we demonstrated a peak power of 3.7 kW enhanced by an order of magnitude greater than that of conventional <i>Q</i>-switched fiber devices. Pulse durations as short as 2 ns have been achieved.
© 1998 Optical Society of America
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched
(290.5900) Scattering : Scattering, stimulated Brillouin
Z. J. Chen, A. B. Grudinin, J. Porta, and J. D. Minelly, "Enhanced Q switching in double-clad fiber lasers," Opt. Lett. 23, 454-456 (1998)