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1 MHz repetition rate hollow fiber pulse compression to sub-100-fs duration at 100 W average power

: Rothhardt, J.; Hädrich, S.; Carstens, H.; Herrick, N.; Demmler, S.; Limpert, J.; Tünnermann, A.


Optics Letters 36 (2011), No.23, pp.4605-4607
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()

We report on nonlinear pulse compression at very high average power. A high-power fiber chirped pulse amplification system based on a novel large pitch photonic crystal fiber delivers 700 fs pulses with 200 mu J pulse energy at a 1 MHz repetition rate, resulting in 200 W of average power. Subsequent spectral broadening in a xenon-filled hollow-core fiber and pulse compression with chirped mirrors is employed for pulse shortening and peak power enhancement. For the first time, to our knowledge, more than 100 W of average power are transmitted through a noble-gas-filled hollow fiber. After pulse compression of 81 fs, 93 mu J pulses are obtained at a 1 MHz repetition rate.