Abstract

The development of high power diode-pumped fiber lasers for cw or pulsed applications requires a good transfer of pump-to-fiber laser radiation, a high slope efficiency and management of thermal problems. For high power solitary femtosecond fiber lasers the chirp parameter should be small combined with a proper value of the group velocity dispersion. To comply with both requests we have decided to use a multitude of doped monomode fibers (61) confined within a common pump core of large diameter (multicore fiber).

© 2000 IEEE