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High harmonic generation by novel fiber amplifier based sources

: Hädrich, S.; Rothhardt, J.; Krebs, M.; Tavella, F.; Willner, A.; Limpert, J.; Tünnermann, A.

Postprint (1.7 MByte; PDF; )

Optics Express 18 (2010), No.19, pp.20242-20250
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()

Significant progress in high repetition rate ultrashort pulse sources based on fiber technology is presented. These systems enable operation at a high repetition rate of up to 500 kHz and high average power in the extreme ultraviolet wavelength range via high harmonic generation in a gas jet. High average power few-cycle pulses of a fiber amplifier pumped optical parametric chirped pulse amplifier are used to produce µW level average power for the strongest harmonic at 42.9 nm at a repetition rate of 96 kHz.