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375-W 37.5-μJ less than 170 fs laser system utilizing nonlinear pulse compression in fused silica

: Schulte, J.; Sartorius, T.; Weitenberg, J.; Vernaleken, A.; Russbueldt, P.


Clarkson, W.A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Solid State Lasers XXVI. Technology and Devices : 30 January-2 February 2017, San Francisco, California, United States
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10082)
ISBN: 978-1-5106-0605-0
ISBN: 978-1-5106-0606-7
Art. 1008217
Conference "Solid State Lasers - Technology and Devices" <26, 2017, San Francisco/Calif.>
Bundesministerium für Bildung und Forschung BMBF
Conference Paper
Fraunhofer ILT ()

We present a novel, robust and efficient scheme for nonlinear pulse compression at highest average powers, which is based on self-phase modulation in a bulk nonlinear medium placed inside a multi-pass-cell (MPC). The scheme is suitable for the compression of sub-ps pulses with peak powers exceeding the threshold for catastrophic self-focusing of the nonlinear medium. Experimentally, we compress the output pulses from an Yb:YAG-Innoslab amplifier from 850 fs to <170 fs at 375 W of output power, 37.5 μJ pulse energy and almost diffraction-limited beam quality using fused silica as the nonlinear medium. The efficiency of the compression unit exceeds 90%.