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Compression of high-energy laser pulses below 5 fs

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Abstract

High-energy 20-fs pulses generated by a Ti:sapphire laser system were spectrally broadened to more than 250 nm by self-phase modulation in a hollow fiber filled with noble gases and subsequently compressed in a broadband high-throughput dispersive system. Pulses as short as 4.5 fs with energy up to 20-µJ were obtained with krypton, while pulses as short as 5 fs with energy up to 70 µJ were obtained with argon. These pulses are, to our knowledge, the shortest generated to date at multigigawatt peak powers.

© 1997 Optical Society of America

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