Pierre Agostini coauthored the measurement of a train of attosecond optical pulses synthesized from high harmonic generation. Measuring only the harmonic intensities does not determine the pulse train: the relative spectral phases are also needed. Their two-colour photoionization measurement recovered those spectral phases, giving reconstructed peaks about 250 attoseconds wide. This joined generation with a measurable test of temporal structure, rather than inferring a short pulse solely from a broad optical spectrum.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. 2001, abstract and Figure 4: phase-locked harmonics, phase measurement and reconstructed pulse train
A physicist researching high harmonic generation and interactions between lasers and matter.[ref]
Pierre Agostini by The Ohio State University Department of Physics. Areas of Expertise; Emeritus Professor appointment
Portrait of Pierre Agostini
. Cosinustangente. CC BY 4.0, via Wikimedia Commons. Source.
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