High-power, single longitudinal mode, single-polarization beam generates from a polarization maintaining double-clad Yb-doped silica fiber laser is more applicable for inertial confinement fusion (ICF) applications. The laser beamlets that converge on a target originate from a low power fiber laser in the master oscillator room (MOR). The laser seed signal amplifies through several cascaded amplifier chains in the front-end system. Today, the most famous fusion facilities, including National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL), Ligne d’Intégration Laser- Laser Mégajoule (LIL-LMJ) and OMEGA utilize fiber-based lasers. In this paper, we have compared various pumping modes comprising end-pumped master oscillator-power amplifier (MOPA) configuration and distributed sidepumped multifiber series fiber laser for scaling up the power of large-mode area (LMA) Yb:silica fiber laser for forward pumping regime.

Date Published: 7 May 2013
PDF: 6 pages
Proc. SPIE 8781, Integrated Optics: Physics and Simulations, 878119 (7 May 2013); doi: 10.1117/12.2017220

Published in SPIE Proceedings Vol. 8781:
Integrated Optics: Physics and Simulations
Pavel Cheben; Jiří Čtyroký; Iñigo Molina-Fernandez, Editor(s)