Abstract

We report on the power scaling to 103W of a 1.1μm continuous-wave Yb3+-doped silica fiber laser incorporating a point-by-point (PbP) fiber-Bragg grating inscribed directly into the active core using 800nm femtosecond laser pulses. The spectrum of the laser exhibited a narrow linewidth that broadened to 260pm at 103W. The output was frequency doubled using an 11mm long periodically poled MgO:LiNbO3 crystal to generate 2.1W of green with an internal conversion efficiency of 10% at high power and 0.81%W at low power.

© 2007 Optical Society of America

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