M. Mueller,
C. Aleshire,
H. Stark,
J. Buldt,
A. Steinkopff,
A. Klenke,
A. Tünnermann,
and J. Limpert
10.4 kW coherently-combined ultrafast fiber laser
Proc. SPIE, 11260 :112600B (February 2020)
10.4 kW coherently-combined ultrafast fiber laser
Proc. SPIE, 11260 :112600B (February 2020)
Abstract:
We present a coherently-combined ultrafast fiber laser system consisting of twelve amplifier channels delivering 10.4 kW average power at 80 MHz repetition rate with a pulse duration of 240 fs FWHM and an almost diffraction-limited beam quality of M2 ≤ 1.2. The system incorporates an automated self-adjustment of the beam combination with 3 degrees of freedom per channel. The system today is, to the best of our knowledge, the world's most average-powerful femtosecond laser. Thermographic analysis indicates that power scaling to 100 kW-class average power is feasible.