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Conferences > CLEO_SI > 2014 > SW3N > SW3N.4

Yb-doped rod-type fiber amplifier with 2 kW average power

Hans-Jürgen Otto, Cesar Jauregui, Fabian Stutzki, Norbert Modsching, Jens Limpert, and Andreas Tünnermann

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Abstract

The effect of mode instabilities has become a strong limitation for the average power scaling of fiber lasers and amplifiers with nearly diffraction-limited beam quality. In this contribution it is shown that the output average power of rod-type fiber amplifiers can be efficiently increased well beyond the threshold of mode-instabilities. This way a new average output power record of 2 kW, with an M2 of 3, emitted from a 1 meter long rod-type fiber amplifier has been achieved.

© 2014 Optical Society of America

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