Abstract

In the past years rare-earth-doped fiber lasers have emerged as an attractive and power scalable solidstate laser concept due to the outstanding thermo-optical properties of an actively doped fiber. Using advanced fiber designs, in continuous-wave (cw) operation output powers exceeding the 10 kW-level with diffraction-limited beam quality have been demonstrated. In the pulsed regime average powers in the order of several hundred Watt even for few cycle pulses based on fiber lasers have been reported.

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