Direct temporal characterization of attosecond pulse trains

Toshihiko Shimizu; Tomoya Okino; Kaoru Yamanouchi; Yasuo Nabekawa; Katsumi Midorikawa

doi:10.1117/12.716783

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13 March 2007 Direct temporal characterization of attosecond pulse trains

Toshihiko Shimizu, Tomoya Okino, Kaoru Yamanouchi, Yasuo Nabekawa, Katsumi Midorikawa

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Proceedings Volume 6460, Commercial and Biomedical Applications of Ultrafast Lasers VII; 64600Q (2007) https://doi.org/10.1117/12.716783
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

We report the direct observation of a train of attosecond pulses by mean of autocorrelation method using nonresonant two photon processes in atoms and molecules in the xuv region. By analyzing the photoelectron spectra produced by two-photon above-threshold ionization in Ar, the chirp in the attosecond pulse train on the top of the pulse duration of 450 atttoseconds was determined. We also succeeded in observing interferometric fringes on the autocorrelation trace and reconstructed the electric field inside of attosecond pulses with ion signals produced by molecular Coulomb explosion.

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Toshihiko Shimizu, Tomoya Okino, Kaoru Yamanouchi, Yasuo Nabekawa, and Katsumi Midorikawa "Direct temporal characterization of attosecond pulse trains", Proc. SPIE 6460, Commercial and Biomedical Applications of Ultrafast Lasers VII, 64600Q (13 March 2007); https://doi.org/10.1117/12.716783

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