19 June 2003 High-power femtosecond fiber laser systems
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Proceedings Volume 4978, Commercial and Biomedical Applications of Ultrafast Lasers III; (2003) https://doi.org/10.1117/12.473190
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States
Abstract
Fiber laser systems offer unique properties for the amplification of ultrashort pulses to high powers. Two approaches are discussed, the amplification of linearly chirped parabolic pulses and a fiber based chirped pulse amplification system. Using the first method, we succeeded to generate 17-W average power of linearly chirped parabolic pulses at 75 MHz repetition rate and diffraction-limited beam quality in a large-mode-area ytterbium-doped fiber amplifier. The recompression of these pulses with an efficiency of 60% resulted in 80-fs pulses with a peak power of 1.7 MW. Furthermore, we report on a diode-pumped ytterbium-doped double-clad fiber based chirped pulse amplification system delivering 350-fs pulses, at 1060 nm wavelength, 75 MHz repetition rate and up to 60 W average power, corresponding to a peak power of 2.3 MW. Key element is a diffraction grating compressor consisting of highly efficient transmission gratings in fused silica allowing the recompression at this high power. Power scaling to the >100 W level is discussed.
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Jens Limpert, Jens Limpert, Thomas Schreiber, Thomas Schreiber, Andreas Liem, Andreas Liem, Holger Zellmer, Holger Zellmer, Andreas Tunnermann, Andreas Tunnermann, "High-power femtosecond fiber laser systems", Proc. SPIE 4978, Commercial and Biomedical Applications of Ultrafast Lasers III, (19 June 2003); doi: 10.1117/12.473190; https://doi.org/10.1117/12.473190
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