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530 W average power, gigawatt peak-power, 4 channel femtosecond fiber CPA system

: Klenke, A.


Optical Society of America -OSA-, Washington/D.C.:
Advanced Solid State Lasers, ASSL 2013 : October 27, 2013 - November 1, 2013, Paris, France
Washington, DC: OSA, 2013 (OSA Technical digest series)
ISBN: 978-1-55752-982-4
Paper AW2A.6
Conference "Advanced Solid State Lasers" (ASSL) <2013, Paris>
Fraunhofer IOF ()

For many applications, femtosecond pulses with high pulse energies are required. Additionally, the combination with repetition rates/average powers is also desired. Coherent combination of multiple amplifiers shows a path to accomplish those goals. In this contribution, we report on a fiber chirped-pulse amplification (CPA) system delivering femtosecond pulses with 1.3 mJ pulse energy at 530 W of average power. The beam quality is nearly diffraction limited. This is achieved by coherently combining four large-pitch fibers (LPF).