Abstract

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 700fs pulses with 200μJ pulse energy at a 1MHz repetition rate, resulting in 200W 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 100W of average power are transmitted through a noble-gas-filled hollow fiber. After pulse compression of 81fs, 93μJ pulses are obtained at a 1MHz repetition rate.

© 2011 Optical Society of America

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