We investigate hollow-core fibers for fiber delivery of high power ultrashort laser pulses. We have benchmarked 3 types of hollow-core fiber, respectively photonic bandgap, nested, and kagome fibers. nested and Kagome reach the 100W average power level, and are characterized experimentally for the delivery of 300 fs- 10 ps pulse range . Systematic experimental study of limitations in terms of beam quality, depointing, non linear effects, polarization or fiber coiling is reported.
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