Incorporation of coherent combination into a state-of-the-art fiber-chirped pulse amplification system obtains 1.1 mJ, 340 fs pulses with up to 280 W of average power at 250 kHz repetition rate. Propagation of this laser pulse inside a krypton-filled hollow-core fiber results in significant spectral broadening. Chirped mirrors are used to compress the pulses to 26 fs, 540 μJ (135 W) leading to a peak power of more than 11 GW. This unprecedented combination of high peak and average power ultrashort pulses opens up new possibilities in multidimensional surface science and coherent soft x-ray generation.
© 2013 Optical Society of America
Lasers and Laser Optics
Original Manuscript: July 11, 2013
Revised Manuscript: August 26, 2013
Manuscript Accepted: August 27, 2013
Published: September 24, 2013
Steffen Hädrich, Arno Klenke, Armin Hoffmann, Tino Eidam, Thomas Gottschall, Jan Rothhardt, Jens Limpert, and Andreas Tünnermann, "Nonlinear compression to sub-30-fs, 0.5 mJ pulses at 135 W of average power," Opt. Lett. 38, 3866-3869 (2013)