Abstract

High-repetition-rate high-harmonic sources are desired for novel attosecond and time-resolved spectroscopies. One route to generating these sources is the nonlinear compression of high-average power Yb fiber and solid-state amplifiers, which can achieve $>100\mathrm{fs}$ pulse duration with microjoule to millijoule pulse energy. Here, we demonstrate compression of 280 fs, 400 μJ pulses from a moderately high power (20 W) Yb:KGW laser amplifier to 15 fs. Few-cycle pulses ($<5$ cycles) with an energy of up to 200 μJ are obtained with a relatively simple scheme utilizing a xenon-filled hollow-core fiber and chirped mirror compressor and are used to generate XUV harmonics.

© 2018 Optical Society of America

Molecular gases for pulse compression in hollow core fibers

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Low energy pulse compression in hollow core fibers using hydrofluorocarbon molecular gas

Reza Safaei, Ojoon Kwon, Philippe Lassonde, Vincent Cardin, Elissa Haddad, Adrien Leblanc, Bruno E. Schmidt, Heide Ibrahim, and François Légaré
OSA Continuum 2(4) 1488-1495 (2019)