Abstract

We report on a spectral combination of four $2\mathrm{ns}$ pulsed fiber amplifier systems to a total output power of $187\mathrm{W}$ at a $50\mathrm{kHz}$ repetition rate resulting in $>3.7\mathrm{mJ}$ of pulse energy and $1.7\mathrm{MW}$ of pulse peak power. A dielectric reflection grating is used to merge the four individual beams to one output with close to diffraction-limited beam quality independent of the power level. The output characteristics are beyond the capabilities of a single emitter and further scaling in a straightforward way appears to be feasible.

© 2009 Optical Society of America

Spectral beam combination of fiber amplified ns-pulses by means of interference filters

O. Schmidt, C. Wirth, D. Nodop, J. Limpert, T. Schreiber, T. Peschel, R. Eberhardt, and A. Tünnermann
Opt. Express 17(25) 22974-22982 (2009)

Average power of 1.1 kW from spectrally combined, fiber-amplified, nanosecond-pulsed sources

O. Schmidt, C. Wirth, I. Tsybin, T. Schreiber, R. Eberhardt, J. Limpert, and A. Tünnermann
Opt. Lett. 34(10) 1567-1569 (2009)

88 W 0.5 mJ femtosecond laser pulses from two coherently combined fiber amplifiers

Enrico Seise, Arno Klenke, Sven Breitkopf, Jens Limpert, and Andreas Tünnermann
Opt. Lett. 36(19) 3858-3860 (2011)

1.1 MW peak-power, 7 W average-power, high-spectral-brightness, diffraction-limited pulses from a photonic crystal fiber amplifier

Fabio Di Teodoro and Christopher D. Brooks
Opt. Lett. 30(20) 2694-2696 (2005)

530 W, 1.3 mJ, four-channel coherently combined femtosecond fiber chirped-pulse amplification system

Arno Klenke, Sven Breitkopf, Marco Kienel, Thomas Gottschall, Tino Eidam, Steffen Hädrich, Jan Rothhardt, Jens Limpert, and Andreas Tünnermann
Opt. Lett. 38(13) 2283-2285 (2013)