135 W average-power femtosecond pulses at 520 nm from a frequency-doubled fiber laser system |
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Authors: | Rothhardt Jan Eidam Tino Hädrich Steffen Jansen Florian Stutzki Fabian Gottschall Thomas Andersen Thomas V Limpert Jens Tünnermann Andreas |
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Institution: | Friedrich Schiller University Jena, Institute of Applied Physics, Jena, Germany. jan.rothhardt@uni-jena.de |
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Abstract: | We present a high-average-power femtosecond laser system at 520 nm central wavelength. The laser system delivers sub-500 fs pulses with 135 W average power at a pulse repetition rate of 5.25 MHz. Excellent beam quality is provided by high power fiber amplifiers and maintained during frequency doubling, resulting in a beam quality factor of M2<1.2. To our knowledge, the system presented here is the highest average power green laser source generating femtosecond pulses with diffraction-limited beam quality. |
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