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200 MW peak power from a Tm-doped fiber CPA system

: Gaida, C.


Optical Society of America -OSA-, Washington/D.C.:
Advanced Solid State Lasers, ASSL 2014 : 16.-21.November 2014, Shanghai, China
Washington, DC: OSA, 2014
ISBN: 978-1-55752-822-3
Paper ATu5A.2
Conference "Advanced Solid State Lasers" (ASSL) <2014, Shanghai>
Fraunhofer IOF ()

We have achieved a record pulse peak power of ~200 MW at 24 W average power and 120 J pulse energy in a state-of-the-art thulium-doped fiber CPA system operating at 2 m wavelength. The achieved peak power is 50 times higher than any other result based on thulium doped fiber amplifiers presented to date. Such performance was enabled by a Tm-doped largepitch fiber with a mode field diameter of 65 m, highly efficient dielectric gratings and a Tmbased fiber oscillator operating in the positively stretched-pulse regime.