In this Letter we report on the generation of 830 W compressed average power from a femtosecond fiber chirped pulse amplification (CPA) system. In the high-power operation we achieved a compressor throughput of about 90% by using high-efficiency dielectric gratings. The output pulse duration of 640 fs at 78 MHz repetition rate results in a peak power of 12 MW. Additionally, we discuss further a scaling potential toward and beyond the kilowatt level by overcoming the current scaling limitations imposed by the transversal spatial hole burning.
© 2010 Optical Society of America
Lasers and Laser Optics
Original Manuscript: October 28, 2009
Revised Manuscript: November 27, 2009
Manuscript Accepted: November 30, 2009
Published: January 5, 2010
Tino Eidam, Stefan Hanf, Enrico Seise, Thomas V. Andersen, Thomas Gabler, Christian Wirth, Thomas Schreiber, Jens Limpert, and Andreas Tünnermann, "Femtosecond fiber CPA system emitting 830 W average output power," Opt. Lett. 35, 94-96 (2010)